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Dayang Chem (Hangzhou) Co.,Ltd.

img _fcksavedurl="/UserAppearance:detailed see specifications Storage:Store in dry, dark and ventilated place. Package:according to the clients requirement Application:It is an important raw material and intermediate used in Organic Synthesis, Phar

2H-1,4-Benzoxazin-3(4H)-one

Cas:5466-88-6

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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Simagchem Corporation

Welcome to Simagchem, your partner in China as a premier supply of bulk specialty chemicals for industry and life science. We introduce experienced quality product and exceptional JIT service with instant market intelligence in China to benefit our

High quality 2H-1,4-Benzoxazin-3(4H)-One supplier in China

Cas:5466-88-6

Min.Order:1 Metric Ton

Negotiable

Type:Manufacturers

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Henan Allgreen Chemical Co.,Ltd

high quality Appearance:white powder Storage:Sealed, dry, microtherm , avoid light and smell. Package:According to the demand of customer Application:Organic synthesis Transportation:by air or by sea Port:shanghai

2H-1,4-Benzoxazin-3(4H)-one

Cas:5466-88-6

Min.Order:1 Kilogram

Negotiable

Type:Manufacturers

inquiry

Chemwill Asia Co., Ltd.

Our main production base is located in Xuzhou industry park. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place.Our R&D team masters core technology for process-design of target building block

2H-1,4-Benzoxazin-3(4H)-one

Cas:5466-88-6

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

inquiry

Zhuozhou Wenxi import and Export Co., Ltd

WITH US,YOUR MONEY IN SAFE,YOUR BUSINESS IN SAFE 1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France et

Manufacturer supply CAS 5466-88-6 with best quality

Cas:5466-88-6

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

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Shanghai Upbio Tech Co.,Ltd

1.No Less 8 years exporting experience. Clients can 100% received goods 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Upbio is Specialized

2H-1,4-Benzoxazin-3(4H)-one 5466-88-6

Cas:5466-88-6

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Baoji Guokang Healthchem co.,ltd

Our company has been in existence for 10 years since its establishment. We have our own unique team. The company integrates independent research and development, production and sales. We have established famous brands at home and abroad. At prese

Organic Synthesis, 2H-1,4-BENZOXAZIN-3(4H)-ONE CAS:5466-88-6

Cas:5466-88-6

Min.Order:1 Gram

FOB Price: $0.7 / 0.9

Type:Trading Company

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Wuhan Han Sheng New Material Technology Co.,Ltd

Our Advantage: high quality with competitive price High quality standard: BP/USP/EP Enterprise standard All purity customized Fast and safe delivery We have reliable forwarder who can help us deliver our goods more fast and safe. We

Factory Supply High Quality CAS 5466-88-6 2H-1,4-Benzoxazin-3(4H)-one

Cas:5466-88-6

Min.Order:10 Kilogram

Negotiable

Type:Trading Company

inquiry

Xiamen Hisunny Chemical Co.,Ltd

Best quality & Attractive price & Professional service; Trial & Pilot & Commercial Hisunny Chemical is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality intermediates, specia

2H-1,4-Benzoxazin-3(4H)-One

Cas:5466-88-6

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Hangzhou J&H Chemical Co., Ltd.

J&H CHEM R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. J&H CHEM has some Manufacturing base in Jia

2H-1,4-Benzoxazin-3(4H)-one

Cas:5466-88-6

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Ality Chemical Corporation

The above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi

Factory Supply 2H-1,4-benzoxazin-3(4H)-one

Cas:5466-88-6

Min.Order:0 Metric Ton

Negotiable

Type:Other

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Shanghai Massive Chemical Technology Co., Ltd.

Massive Chemical is certified with ISO9001 and ISO14001 manufacturer for this product. We will offer all documents as requirement for the materials which includes, Certificate of Analysis, Material Safety Data Sheet, and Method of Analysis and

2H-1,4-BENZOXAZIN-3(4H)-ONE/High quality/Best price

Cas:5466-88-6

Min.Order:1 Gram

FOB Price: $1.0

Type:Lab/Research institutions

inquiry

SHANGHAI SYSTEAM BIOCHEM CO., LTD

We are one of a few suppliers that can offer custom synthesis service of this product We are specialized in custom synthesis, chemical/pharmaceutical/ pesticides outsourcing and contract research. We are committed to prov

2H-1,4-Benzoxazin-3(4H)-one

Cas:5466-88-6

Min.Order:100 Gram

FOB Price: $100.0 / 2000.0

Type:Lab/Research institutions

inquiry

Henan Tianfu Chemical Co., Ltd.

Our company was built in 2009 with an ISO certificate.In the past 6 years, we have grown up as a famous fine chemicals supplier in China and we had established stable business relationships with Samsung,LG,Merck,Thermo Fisher Scientific and so on.O

5466-88-6 2H-1,4-BENZOXAZIN-3(4H)-ONE

Cas:5466-88-6

Min.Order:1 Kilogram

FOB Price: $1000.0

Type:Lab/Research institutions

inquiry

Henan Wentao Chemical Product Co., Ltd.

1)quick response within 12 hours; 2)quality guarantee: all products are strictly tested by our qc, confirmed by qa and approved by third party lab in china, usa, canada, germany, uk, italy, france etc. 3) oem/odm available; 4) rea

2H-1,4-BENZOXAZIN-3(4H)-ONECAS NO.:5466-88-6

Cas:5466-88-6

Min.Order:1 Gram

FOB Price: $2.0

Type:Lab/Research institutions

inquiry

EAST CHEMSOURCES LIMITED

factory?direct?saleAppearance:White Powder Storage:Store In Dry, Cool And Ventilated Place Package:25kg/drum, also according to the clients requirement Application:It is widely used as a thickener, emulsifier and stabilizer Transportation:By Sea Or B

2H-1,4-Benzoxazin-3(4H)-one

Cas:5466-88-6

Min.Order:1 Kilogram

FOB Price: $18.0 / 20.0

Type:Trading Company

inquiry

Hangzhou Huarong Pharm Co., Ltd.

We Huarong Pharm can provide Customized Synthesis & Process R&D & APIs and intermediates Production & Quality Research & Registration Application, especially our GMP validation service which complies with SFDA, FDA, WHO and EU EMPA. O

2H-1,4-Benzoxazin-3(4H)-one

Cas:5466-88-6

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Shandong Mopai Biotechnology Co., LTD

Shandong Mopai Biotechnology Co., LTD is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemicals. W

2H-1,4-Benzoxazin-3(4H)-one

Cas:5466-88-6

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

KAISA GROUP INC

1.Applied in food field.it can improve the immune system and prolong life. 2.Appliedin cosmetic field.it can improve the skin care. 3.Applied in pharmaceutical field.it can treat various dieases. 4.Our product quality assurance will make our customer

2H-1,4-Benzoxazin-3(4H)-one

Cas:5466-88-6

Min.Order:1 Metric Ton

FOB Price: $1.5

Type:Trading Company

inquiry

Hangzhou Zhongqi chem Co.,Ltd.

Located in Hangzhou National Hi-Tech Industrial Development Zone, zhongqichem is a technical company mainly focus on the Custom synthesis, manufacturing, sales of chemicals to various industries. Benefiting from the outstanding customer service and h

2H-1,4-Benzoxazin-3(4H)-one

Cas:5466-88-6

Min.Order:0

Negotiable

Type:Other

inquiry

Hunan chemfish Pharmaceutical co.,Ltd

Appearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea

2H-1,4-Benzoxazin-3(4H)-one

Cas:5466-88-6

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Bluecrystal chem-union

We are a Union of chemistry in China, consists of chemists,engineers, laboratories,factories in China. We organize surplus capacity of R&D and production as well as custom synthesis for chemical products and chemical business project. We are supp

2H-1,4-Benzoxazin-3(4H)-one

Cas:5466-88-6

Min.Order:1 Metric Ton

FOB Price: $1.0

Type:Trading Company

inquiry

Win-Win chemical Co.Ltd

Stock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai

2H-1,4-Benzoxazin-3(4H)-one cas no. 5466-88-6 97%

Cas:5466-88-6

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Kono Chem Co.,Ltd

high purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:drum and bag Application:for pharma use Transportation:by sea or air Port:Beijing or Guangzhou

2H-1,4-benzoxazin-3(4H)-one

Cas:5466-88-6

Min.Order:0

Negotiable

Type:Other

inquiry

Hangzhou Dingyan Chem Co., Ltd

R & D enterprises have their own stock in stockAppearance:To be subject to the object Package:Customized Application:pharmaceutical intermediates Transportation:Air Port:Shanghai;Guangzhou

2H-1,4-Benzoxazin-3(4H)-one

Cas:5466-88-6

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

GIHI CHEMICALS CO.,LIMITED

high purity,in stock Package:25kg/drum,or as per customers'demand Application:API,Pharmaceutical intermediates Transportation:air,sea,courier

2H-1,4-Benzoxazin-3(4H)-one

Cas:5466-88-6

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Aecochem Corp.

Our clients, like BASF,CHEMO,Brenntag,ASR,Evonik,Merck and etc.Appearance:COA Storage:in stock Application:MSDS/TDS

2H-1,4-Benzoxazin-3(4H)-One

Cas:5466-88-6

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Antimex Chemical Limied

Ansciep Chemical is a professional enterprise manufacturing and distributing fine chemicals and speciality chemicals. We have been dedicated to heterocycle compounds and phenyl rings for tens of years. This is our mature product for export. Our quali

2H-1,4-benzoxazin-3(4H)-one

Cas:5466-88-6

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Qingdao Beluga Import and Export Co., LTD

We are a trading company aiming at providing high-quality services to customers. Established for many years, with good reputation in the industry Storage:Sealed and preserved Application:Fine chemical intermediates, used as the main raw material for

2H-1,4-Benzoxazin-3(4H)-one

Cas:5466-88-6

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hubei Langyou International Trading Co., Ltd

2H-1,4-Benzoxazin-3(4H)-one Application:2H-1,4-Benzoxazin-3(4H)-one

2H-1,4-Benzoxazin-3(4H)-one

Cas:5466-88-6

Min.Order:0

Negotiable

Type:Other

inquiry

Synthetic route

(2-chloro-phenoxy)-acetic acid amide
35368-68-4

(2-chloro-phenoxy)-acetic acid amide

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With chloro(2-dicyclohexylphosphino-2’,4’,6’-triisopropyl-1,1‘-biphenyl)[2-(2’-amino-1,1‘-biphenyl’)]palladium(II); caesium carbonate In 1,4-dioxane at 110℃; for 2h; Schlenk technique; Inert atmosphere; chemoselective reaction;99%
glycolamide
598-42-5

glycolamide

1,2-dichloro-benzene
95-50-1

1,2-dichloro-benzene

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With copper acetylacetonate; sodium hydroxide; N,N`-dimethylethylenediamine In dichloromethane; N,N-dimethyl-formamide at 60℃; for 5h; Reagent/catalyst;97.6%
2-Iodophenol
533-58-4

2-Iodophenol

Chloroacetamide
79-07-2

Chloroacetamide

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With copper(l) iodide; 1,10-Phenanthroline; caesium carbonate In 1,4-dioxane at 90℃; for 24h; Inert atmosphere;95%
methanol
67-56-1

methanol

ethyl (2-hydroxyphenyl)carbamate
56836-51-2

ethyl (2-hydroxyphenyl)carbamate

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With silica gel; potassium nitrate for 0.333333h; Reagent/catalyst; Concentration; Microwave irradiation;93.6%
chloroacetyl chloride
79-04-9

chloroacetyl chloride

2-amino-phenol
95-55-6

2-amino-phenol

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With sodium hydrogencarbonate In water for 4h; Reflux;93%
With potassium carbonate In acetonitrile for 20h; Reflux;92.7%
With sodium hydrogencarbonate; N-benzyl-N,N,N-triethylammonium chloride In chloroform 1.) 1 h, 0-5 deg C, 2.) 5 h, 55 deg C;89%
2-(2-nitrophenoxy)acetonitrile
31507-30-9

2-(2-nitrophenoxy)acetonitrile

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With iron; acetic acid for 2.5h; Inert atmosphere; Reflux;93%
With samarium; titanium tetrachloride In tetrahydrofuran at 20℃; for 0.166667h; reductive cyclization;70%
With iron; acetic acid for 2h; Reflux;
4-methyl-2-pentanone
108-10-1

4-methyl-2-pentanone

2-amino-phenol
95-55-6

2-amino-phenol

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With sodium hydrogencarbonate In water at 0℃; Reflux;93%
ethyl o-nitrophenoxyacetate
37682-31-8

ethyl o-nitrophenoxyacetate

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With iron; acetic acid at 0℃; for 7h; Inert atmosphere; Reflux;91%
With iron In acetic acid at 0℃; for 7h; Inert atmosphere; Reflux;91%
With iron In acetic acid at 0 - 20℃; for 2h; Reflux;74%
N-(2-hydroxyphenyl)-2-chloroacetamide
10147-68-9

N-(2-hydroxyphenyl)-2-chloroacetamide

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With potassium carbonate In N,N-dimethyl-formamide for 10h; Reflux;88%
With potassium carbonate In ethyl acetate at 20℃; for 10h;84%
With alkali
With potassium carbonate In tetrahydrofuran for 2h; Reflux; Inert atmosphere;64.8 g
With potassium tert-butylate In dichloromethane; isopropyl alcohol at 0 - 20℃; for 1h;
ethyl bromoacetate
105-36-2

ethyl bromoacetate

2-amino-phenol
95-55-6

2-amino-phenol

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With 1,8-diazabicyclo[5.4.0]undec-7-ene; 1-octyl-3-methylimidazolium tetrafluoroborate at 20℃; for 1h; chemoselective reaction;86%
Stage #1: ethyl bromoacetate; 2-amino-phenol With potassium fluoride In N,N-dimethyl-formamide at 60℃;
Stage #2: With hydrogen; palladium on activated charcoal In ethanol at 60℃; under 7600 Torr;
64%
2-(2-nitrophenoxy)-acetic acid methyl ester
7506-93-6

2-(2-nitrophenoxy)-acetic acid methyl ester

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With samarium; titanium tetrachloride In tetrahydrofuran at 20℃; for 0.166667h; reductive cyclization;75%
With iron In acetic acid at 80℃; for 1h;
6-bromo-3,4-dihydro-2H-1,4-benzoxazin-3-one
24036-52-0

6-bromo-3,4-dihydro-2H-1,4-benzoxazin-3-one

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With [ruthenium(II)(η6-1-methyl-4-isopropyl-benzene)(chloride)(μ-chloride)]2; cesium acetate; isopropyl alcohol at 100℃; Schlenk technique; Inert atmosphere;72%
With [RhCl2(p-cymene)]2; cesium acetate In isopropyl alcohol at 20 - 100℃; for 24h; Inert atmosphere;72%
Chloroacetamide
79-07-2

Chloroacetamide

o-halophenol

o-halophenol

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With potassium carbonate In ethanol for 3h; Heating;70%
N-(acetoxy)-2-phenoxyacetamide

N-(acetoxy)-2-phenoxyacetamide

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With polyphophoric acid at 65℃; for 2h; Reagent/catalyst; Temperature;56%
2-Bromoacetyl bromide
598-21-0

2-Bromoacetyl bromide

2-amino-phenol
95-55-6

2-amino-phenol

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
Stage #1: 2-amino-phenol With potassium carbonate In dichloromethane at 0℃; for 0.5h;
Stage #2: 2-Bromoacetyl bromide In dichloromethane at 20℃; for 4h;
55%
N-(benzoyloxy)-2-phenoxyacetamide

N-(benzoyloxy)-2-phenoxyacetamide

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With polyphophoric acid at 60℃; for 2h; Reagent/catalyst; Temperature;52%
(E)-3-benzylidene-4-tosyl-3,4-dihydro-2H-1,4-benzoxazine
1232133-30-0

(E)-3-benzylidene-4-tosyl-3,4-dihydro-2H-1,4-benzoxazine

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With naphthalene; sodium In tetrahydrofuran at -65℃; for 0.333333h; stereoselective reaction;50%
6-chloromethyl-4-methyl-3-oxo-2,3-dihydro-4H-1,4-benzoxazine
139503-05-2

6-chloromethyl-4-methyl-3-oxo-2,3-dihydro-4H-1,4-benzoxazine

N-methylbenzylamine hydrochloride
13426-94-3

N-methylbenzylamine hydrochloride

chloroacetyl chloride
79-04-9

chloroacetyl chloride

2-amino-phenol
95-55-6

2-amino-phenol

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With sodium hydrogencarbonate; potassium carbonate In diethyl ether; hexane; chloroform32%
6-chloro-4-hydroxy-(2H)-1,4-benzoxazin-3(4H)-one
13212-63-0

6-chloro-4-hydroxy-(2H)-1,4-benzoxazin-3(4H)-one

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With hydrogen; palladium on activated charcoal30%
7-chloro-4-hydroxy-2H-1,4-benzoxazin-3(4H)-one
138035-65-1

7-chloro-4-hydroxy-2H-1,4-benzoxazin-3(4H)-one

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With hydrogen; palladium on activated charcoal30%
2-phenoxyacetohydroxamic acid
46120-83-6

2-phenoxyacetohydroxamic acid

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With iron(III) chloride In nitromethane at 60℃; for 2h; Reagent/catalyst; Temperature;30%
Multi-step reaction with 2 steps
1: triethylamine / chloroform / 2 h / 0 - 20 °C
2: polyphophoric acid / 2 h / 60 °C
View Scheme
Multi-step reaction with 2 steps
1: dmap / 3 h / 20 °C
2: polyphophoric acid / 2 h / 65 °C
View Scheme
N-(2-hydroxyphenyl)-2-chloroacetamide
10147-68-9

N-(2-hydroxyphenyl)-2-chloroacetamide

furan-2,3,5(4H)-trione pyridine (1:1)

furan-2,3,5(4H)-trione pyridine (1:1)

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

2-nitrophenoxyacetic acid
1878-87-1

2-nitrophenoxyacetic acid

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With sodium hydroxide; iron(II) sulfate
With iron; acetic acid
With ethanol; platinum Hydrogenation;
2-chloro-N-(2-methoxyphenyl)acetamide
55860-22-5

2-chloro-N-(2-methoxyphenyl)acetamide

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With aluminium trichloride at 180℃; folgendes Behandeln mit wss. NaOH;
2-acetamidophenoxyacetic acid
1798-12-5

2-acetamidophenoxyacetic acid

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With hydrogenchloride
2-azidocarbonylmethoxy-benzoyl azide
859942-82-8

2-azidocarbonylmethoxy-benzoyl azide

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With hydrogenchloride
2-amino-phenol
95-55-6

2-amino-phenol

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With sodium; toluene anschliessend Erwaermen mit Chloressigsaeure-aethylester;
Multi-step reaction with 2 steps
1: Na2CO3 / CHCl3 / 3 h / Ambient temperature
2: K2CO3 / dimethylformamide / 3 h / 80 °C
View Scheme
Multi-step reaction with 2 steps
1: benzene
2: alkali
View Scheme
6β-[2-(2-nitro-phenoxy)-acetylamino]-penicillanic acid
29603-66-5

6β-[2-(2-nitro-phenoxy)-acetylamino]-penicillanic acid

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With hydrogen; palladium In water
2H-1,4-benzoxazin-3(4H)-thione
14183-51-8

2H-1,4-benzoxazin-3(4H)-thione

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
With hydrogenchloride
4-hydroxy-7-methoxy-(2H)-1,4-benzoxazin-3(4H)-one
69884-05-5

4-hydroxy-7-methoxy-(2H)-1,4-benzoxazin-3(4H)-one

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Conditions
ConditionsYield
(i) AcCl, NaHCO3, CH2Cl2, (ii) PhOH; Multistep reaction;
3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

acetic anhydride
108-24-7

acetic anhydride

4-acetoxy-(2H)-1,4-benzoxazin-3(4H)-one
33252-96-9

4-acetoxy-(2H)-1,4-benzoxazin-3(4H)-one

Conditions
ConditionsYield
With pyridine for 12h;100%
3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

di-tert-butyl dicarbonate
24424-99-5

di-tert-butyl dicarbonate

tert-butyl 3-oxo-3,4-dihydro-2H-1,4-benzoxazine-4-carboxylate
221049-50-9

tert-butyl 3-oxo-3,4-dihydro-2H-1,4-benzoxazine-4-carboxylate

Conditions
ConditionsYield
With dmap In acetonitrile at 20℃; for 48h;99%
With dmap In tetrahydrofuran Ambient temperature;96%
With dmap In tetrahydrofuran at 20℃; Acylation;96%
With dmap In tetrahydrofuran at 20℃; for 3h; Acylation;96%
With dmap In acetonitrile for 4h;
3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

2-chloropropionyl chloride
7623-09-8

2-chloropropionyl chloride

6-(2-chloropropanoyl)-2H-1,4-benzoxazin-3(4H)-one
293741-63-6

6-(2-chloropropanoyl)-2H-1,4-benzoxazin-3(4H)-one

Conditions
ConditionsYield
With aluminum (III) chloride In 1,2-dichloro-ethane at 20℃; for 12h;99%
3-chloromethyl-5-methylisoxazole
35166-37-1

3-chloromethyl-5-methylisoxazole

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

4-((5-methylisoxazol-3-yl)methyl)-2H-benzo[b][1,4]oxazin-3(4H)-one

4-((5-methylisoxazol-3-yl)methyl)-2H-benzo[b][1,4]oxazin-3(4H)-one

Conditions
ConditionsYield
With potassium carbonate In N,N-dimethyl-formamide for 18h; Heating;99%
3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

1,4-benzoxazine
5735-53-5

1,4-benzoxazine

Conditions
ConditionsYield
With [RuCl2(N-heterocyclic carbene)(bis[2-(diphenylphosphino)ethyl]amine)]; hydrogen; caesium carbonate In toluene; butan-1-ol at 120℃; under 22502.3 Torr; for 6h; Schlenk technique; Autoclave;98%
With lithium aluminium tetrahydride In tetrahydrofuran at 0 - 20℃; for 2h; Inert atmosphere;92%
Stage #1: 3,4-dihydro-3-oxo-2H-1,4-benzoxazine With lithium aluminium tetrahydride In tetrahydrofuran Heating / reflux;
Stage #2: With sodium hydroxide; water In tetrahydrofuran
79%
3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

ethyl bromoacetate
105-36-2

ethyl bromoacetate

ethyl 2-(3-oxo-2,3-dihydro-4H-benzo[b][1,4]oxazin-4-yl)acetate
26673-71-2

ethyl 2-(3-oxo-2,3-dihydro-4H-benzo[b][1,4]oxazin-4-yl)acetate

Conditions
ConditionsYield
Stage #1: 3,4-dihydro-3-oxo-2H-1,4-benzoxazine With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 0.25h;
Stage #2: ethyl bromoacetate In N,N-dimethyl-formamide at 90℃;
98%
With potassium carbonate In N,N-dimethyl-formamide at 50℃; for 3h;85%
With potassium carbonate In methanol for 4h; Heating;77.4%
With sodium hydride In N,N-dimethyl-formamide Ambient temperature;30%
With potassium carbonate In N,N-dimethyl-formamide at 80℃; for 12h;
3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

phenyl chloroformate
1885-14-9

phenyl chloroformate

phenyl 2,3-dihydro-4H-1,4-benzoxazin-3-one-4-carboxylate
680971-62-4

phenyl 2,3-dihydro-4H-1,4-benzoxazin-3-one-4-carboxylate

Conditions
ConditionsYield
With n-butyllithium In tetrahydrofuran at -78℃;98%
Stage #1: 3,4-dihydro-3-oxo-2H-1,4-benzoxazine With n-butyllithium In tetrahydrofuran; hexane at -78℃; for 0.5h;
Stage #2: phenyl chloroformate In tetrahydrofuran; hexane at 20℃; for 2h;
3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

1,3-chlorobromopropane
109-70-6

1,3-chlorobromopropane

4-(3-chloropropyl)-2H-1,4-benzoxazin-3(4H)-one
73733-78-5

4-(3-chloropropyl)-2H-1,4-benzoxazin-3(4H)-one

Conditions
ConditionsYield
With potassium carbonate In N,N-dimethyl-formamide at 60℃; for 60h;97%
3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Ethyl 3-bromopropionate
539-74-2

Ethyl 3-bromopropionate

ethyl 3-(3-oxo-2,3-dihydro-4H-benzo[b][1,4]oxazin-4-yl)propanoate
23866-14-0

ethyl 3-(3-oxo-2,3-dihydro-4H-benzo[b][1,4]oxazin-4-yl)propanoate

Conditions
ConditionsYield
Stage #1: 3,4-dihydro-3-oxo-2H-1,4-benzoxazine With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 0.25h;
Stage #2: Ethyl 3-bromopropionate In N,N-dimethyl-formamide at 90℃;
95%
With potassium carbonate In N,N-dimethyl-formamide for 18h; Heating;91%
With sodium hydride In N,N-dimethyl-formamide at 20℃; for 3h;45%
3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

4-nitrobenzaldehdye
555-16-8

4-nitrobenzaldehdye

2-[(4-nitrophenyl)methylene]-2H-1,4-benzoxazin-3(4H)-one

2-[(4-nitrophenyl)methylene]-2H-1,4-benzoxazin-3(4H)-one

Conditions
ConditionsYield
With acetic anhydride; triethylamine for 7h; Heating;94%
3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

MeX

MeX

4-methyl-4H-benzo[1,4]oxazin-3-one
21744-84-3

4-methyl-4H-benzo[1,4]oxazin-3-one

Conditions
ConditionsYield
With N-benzyl-N,N,N-triethylammonium chloride; potassium carbonate In acetonitrile at 60℃;94%
3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Bromoacetaldehyde diethyl acetal
2032-35-1

Bromoacetaldehyde diethyl acetal

4-(2,2-diethoxyethyl)-1,4-benzoxazin-3-one
1407395-24-7

4-(2,2-diethoxyethyl)-1,4-benzoxazin-3-one

Conditions
ConditionsYield
Stage #1: 3,4-dihydro-3-oxo-2H-1,4-benzoxazine With potassium tert-butylate In N,N-dimethyl acetamide at 20℃; for 0.0833333h;
Stage #2: Bromoacetaldehyde diethyl acetal With tetra-(n-butyl)ammonium iodide In N,N-dimethyl acetamide at 80℃; for 2h;
93.7%
3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

isonicotinoyl chloride hydrochloride
39178-35-3

isonicotinoyl chloride hydrochloride

6-(1-pyridin-4-ylmethanoyl)-4H-benzo[1,4]oxazine-3-one hydrochloride
1399854-48-8

6-(1-pyridin-4-ylmethanoyl)-4H-benzo[1,4]oxazine-3-one hydrochloride

Conditions
ConditionsYield
With aluminum (III) chloride In N,N-dimethyl-formamide at 85℃; Friedel-Crafts Acylation; Inert atmosphere;93%
3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

propargyl bromide
106-96-7

propargyl bromide

4-(prop-2-yn-1-yl)-2H-benzo[b][1,4]oxazin-3(4H)-one
37988-92-4

4-(prop-2-yn-1-yl)-2H-benzo[b][1,4]oxazin-3(4H)-one

Conditions
ConditionsYield
With potassium carbonate In acetone for 5h; Heating;92%
With tetra-(n-butyl)ammonium iodide; potassium carbonate In N,N-dimethyl-formamide at 20℃; for 3h; Cooling with ice;92%
With potassium carbonate In acetone; toluene Reflux;75%
With potassium tert-butylate 1.) DMF, RT, 10 min, 2.) RT, 30 min; Yield given. Multistep reaction;
With potassium carbonate In acetone Inert atmosphere; Reflux;
1,4-dibromo-butane
110-52-1

1,4-dibromo-butane

3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

4-(4-Bromobutan-1-yl)-3,4-dihydro-2H-1,4-benzoxazin-3(4H)-one
116936-86-8

4-(4-Bromobutan-1-yl)-3,4-dihydro-2H-1,4-benzoxazin-3(4H)-one

Conditions
ConditionsYield
With potassium carbonate; potassium iodide In acetonitrile at 100℃;92%
Stage #1: 3,4-dihydro-3-oxo-2H-1,4-benzoxazine With sodium hydride In N,N-dimethyl-formamide; mineral oil at 30℃; for 1h; Cooling with ice;
Stage #2: 1,4-dibromo-butane In N,N-dimethyl-formamide; mineral oil at 30℃;
86%
With aluminum oxide; potassium fluoride; potassium iodide In acetonitrile for 5h; Substitution; alkylation; Heating;
3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

chloroacetyl chloride
79-04-9

chloroacetyl chloride

6-(chloroacetyl)-2H-1,4-benzoxazin-3(4H)-one
26518-76-3

6-(chloroacetyl)-2H-1,4-benzoxazin-3(4H)-one

Conditions
ConditionsYield
With aluminum (III) chloride In dichloromethane for 5.16h; Cooling with ice; Reflux;91%
With aluminium trichloride In dichloromethane at 20℃; for 12h; Friedel-Crafts reaction;87.7%
With aluminium trichloride In dichloromethane86%
With aluminium trichloride
With aluminium trichloride In dichloromethane
3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

2H-1,4-benzoxazin-3(4H)-thione
14183-51-8

2H-1,4-benzoxazin-3(4H)-thione

Conditions
ConditionsYield
With Lawessons reagent In tetrahydrofuran for 24h; Ambient temperature;91%
With tetraphosphorus decasulfide; triethylamine In acetonitrile90%
With tetraphosphorus decasulfide; N-benzyl-N,N,N-triethylammonium chloride; potassium carbonate In 1,2-dichloro-ethane Heating;90%
3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

4-(2-bromoethyloxy)benzaldehyde
52191-15-8

4-(2-bromoethyloxy)benzaldehyde

(+/-) 4-[2-(3-Oxo-2H-1,4-benzoxazin-4-yl)ethoxy]benzaldehyde

(+/-) 4-[2-(3-Oxo-2H-1,4-benzoxazin-4-yl)ethoxy]benzaldehyde

Conditions
ConditionsYield
With potassium carbonate In N,N-dimethyl-formamide at 80℃; for 10h;91%
3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

pet

pet

4-(2-bromoethyloxy)benzaldehyde
52191-15-8

4-(2-bromoethyloxy)benzaldehyde

(+/-) 4-[2-(3-Oxo-2H-1,4-benzoxazin-4-yl)ethoxy]benzaldehyde

(+/-) 4-[2-(3-Oxo-2H-1,4-benzoxazin-4-yl)ethoxy]benzaldehyde

Conditions
ConditionsYield
With potassium carbonate In water; ethyl acetate; N,N-dimethyl-formamide91%
3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

methyl iodide
74-88-4

methyl iodide

4-methyl-4H-benzo[1,4]oxazin-3-one
21744-84-3

4-methyl-4H-benzo[1,4]oxazin-3-one

Conditions
ConditionsYield
With sodium hydroxide; N-benzyl-N,N,N-triethylammonium chloride; silica gel In acetonitrile for 0.133333h; Irradiation;90%
With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 2h;78.12%
With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 2h;78.12%
3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

Benzyl bromoacetate
5437-45-6

Benzyl bromoacetate

benzyl 2-(3-oxo-1,4-benzoxazin-4-yl)acetate

benzyl 2-(3-oxo-1,4-benzoxazin-4-yl)acetate

Conditions
ConditionsYield
With potassium carbonate In acetonitrile at 60℃; for 36h; Reflux;90%
3,4-dihydro-3-oxo-2H-1,4-benzoxazine
5466-88-6

3,4-dihydro-3-oxo-2H-1,4-benzoxazine

2-Bromopropionyl chloride
7148-74-5

2-Bromopropionyl chloride

6-(2-bromopropanoyl)-2H-1,4-benzoxazin-3(4H)-one
58819-99-1

6-(2-bromopropanoyl)-2H-1,4-benzoxazin-3(4H)-one

Conditions
ConditionsYield
With aluminum (III) chloride In 1,2-dichloro-ethane at 20℃; for 12h;89%

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