Dayangchem's 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. DayangChem can provide different quantities
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inquiryAfter years of continuous optimization of the process line by Marvelpharm limited, 2-Methyl-3, 1-Benzoxazin-4-One (CAS No: 525-76-8) is a product with higher purity, more stable product properties and is not easy to deteriorate. Moreover, the current
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inquiry1.A strong technical force and advanced processing equipments. The quality of the products has been strictly inspected and all kinds of index have reached or exceeded domestic and international standards.2. Now we have established long-term stable re
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inquiryItems Standard Result Assay (Ursolic acid) 98%min 98.22% ----------------------------------------------------------------
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inquiryHebei yanxi chemical co., LTD is a professional research, development and production Cyromazine、lead diacetate trihydrate /Lead acetate trihydrateC、 2-phenylacetamide 、 4-Aminophenyl-1-phenethylpiperidine 、Citric acid monohydrate 、 Citric acid/c
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inquiryThe 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
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inquiryOur advantages: 1. High quality and competitive price: 1) Standard: BP/USP/EP/ enterprise standard 2) All purity ≥99% 3) We are manufacturers and can provide high quality products at factory prices. 2. Fast and safe delivery 1) The package c
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inquiryWITH 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
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inquiry1. Product advantages ♦ High purity, all above 98.5%, no impurities after dissolution ♦ We will test each batch to ensure quality ♦ OEM and private brand services designed for free ♦ Various cap colors available ♦ W
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inquiry2-METHYL-3,1-BENZOXAZA-4-ONE CAS:525-76-8 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specializing in high quality organi
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inquiryHello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by emai
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inquirySuperiority Product Detail Minimum Order Qty.
Cas:525-76-8
Min.Order:100 Kilogram
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inquiryOur 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
Henan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod
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inquiry2-METHYL-3,1-BENZOXAZA-4-ONE cas 525-76-8 Purity: 99% Min Application: Intermediates Appearance: Powder Package: Bag Delivery: 3-5days Our Advantage & Service 1.Top quality: Using high quality material and establishing a strict quali
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inquiry2-METHYL-3,1-BENZOXAZA-4-ONE CAS 525-76-8 Our advantage 1.Top quality: Using high quality material and establishing a strict quality control system,assigning specific persons in charge of each part of production,from raw material purchase to
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inquiryZibo Hangyu Biotechnology Development 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 chemi
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inquirySuperior quality, moderate price & quick delivery. Appearance:white powder Storage:Stored in cool, dry and ventilation place; Away from fire and heat Package:10g/bag,or as your request Application:Used as Pharmaceutical Intermediates Transporta
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Min.Order:1 Gram
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inquiryProduct Details Grade: pharmaceutical grade Purity:99%+ ProductionCapacity: 1000 Kilogram/Month Scope of use: For scientific research only(The product must be used legally) Our Advantage 1. Best quality with competitive price. 2. Quick shipping,
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Min.Order:1 Kilogram
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inquiryOur Advantages A. International Top level TechnologyOur company owned biomedicine experts are famous at home and abroad with rich experience in research and development in the field of efficient chiral functional molecules research and development an
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inquiryProduct Name: 2-METHYL-3,1-BENZOXAZA-4-ONE Synonyms: TIMTEC-BB SBB000135;2-methyl-4h-1-benzoxazin-4-one;3-methyl-1-phenyl-6,7-dihydro-5H-pyrrolo[2,3-d]pyrimidine-2,4-dione;2-METHYL-3,1-BENZOXAZA-4-ONE;2-METHYL-4H-3,1-BENZOXAZIN-4-ONE;ACETYL ANT
Cas:525-76-8
Min.Order:1 Gram
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Type:Lab/Research institutions
inquiryfactory?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
Cas:525-76-8
Min.Order:1 Kilogram
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inquiryConditions | Yield |
---|---|
Heating; | 100% |
at 130℃; for 0.166667h; Irradiation; | 100% |
at 130℃; for 3h; | 100% |
carbon monoxide
2-iodophenylamine
acetyl chloride
2-methyl-4-oxo-3,1-benzoxazine
Conditions | Yield |
---|---|
With 1,1'-bis-(diphenylphosphino)ferrocene; N-ethyl-N,N-diisopropylamine; palladium diacetate In tetrahydrofuran at 100℃; under 15514.9 Torr; for 24h; | 99% |
With N-ethyl-N,N-diisopropylamine In 2-methyltetrahydrofuran at 100℃; under 15001.5 Torr; for 24h; Autoclave; | 94% |
With C22H28Br2N4Pd; N-ethyl-N,N-diisopropylamine In tetrahydrofuran at 80℃; under 3000.3 Torr; for 40h; Autoclave; | 60% |
Conditions | Yield |
---|---|
With triphenyl phosphite In pyridine at 100℃; for 2h; | 90% |
With acetic anhydride at 130℃; for 1h; | 90% |
With acetic anhydride for 3h; Cyclization; Heating; | 88% |
Conditions | Yield |
---|---|
for 0.1h; Irradiation; | 90% |
at 100℃; for 0.75h; Time; Microwave irradiation; Inert atmosphere; | 82% |
With acetic acid Reflux; | 75% |
carbon monoxide
acetic anhydride
2-bromoaniline
2-methyl-4-oxo-3,1-benzoxazine
Conditions | Yield |
---|---|
With potassium tetrachloropalladate(II); N-ethyl-N,N-diisopropylamine; catacxium A In toluene at 100℃; under 1500.15 Torr; for 16h; Catalytic behavior; Solvent; Reagent/catalyst; Autoclave; | 90% |
2-carboxymalonanilic acid ethyl ester
2-methyl-4-oxo-3,1-benzoxazine
Conditions | Yield |
---|---|
With PPA; Polyphosphoric acid (PPA) for 1h; | 89% |
Conditions | Yield |
---|---|
Stage #1: N-(2-acetylphenyl)acetamide With iodine; sodium hydrogencarbonate In dimethyl sulfoxide at 20℃; for 0.0333333h; Stage #2: With tert.-butylhydroperoxide In nonane; dimethyl sulfoxide at 95℃; for 3h; | 89% |
Conditions | Yield |
---|---|
85% |
1-Acetyl-2,1-benzisoxazol-3(1H)-one
A
2-methyl-4-oxo-3,1-benzoxazine
Conditions | Yield |
---|---|
at 550℃; under 0.01 Torr; Elimination; Cyclization; | A 80% B 6% |
Conditions | Yield |
---|---|
With 1,1,3,3-Tetramethyldisiloxane; copper(II) bis(trifluoromethanesulfonate); triethylamine; triphenylphosphine In toluene at 110℃; Aza-Wittig Reaction; Reflux; | 73% |
2-methyl-4-oxo-3,1-benzoxazine
Conditions | Yield |
---|---|
With triphenylphosphine In toluene at 20℃; Aza-Wittig Reaction; | 73% |
Conditions | Yield |
---|---|
With palladium diacetate; triethylamine; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene In N,N-dimethyl-formamide at 80℃; for 5h; Inert atmosphere; | 63% |
2-methyl-4-oxo-3,1-benzoxazine
Conditions | Yield |
---|---|
In xylene Heating; | 62% |
acetic anhydride
anthranilic acid
formamide
A
4-Hydroxyquinazoline
B
2-methyl-4-quinazolone
C
2-methyl-4-oxo-3,1-benzoxazine
Conditions | Yield |
---|---|
at 150℃; for 0.333333h; Niementowski quinazoline reaction; Microwave irradiation; Sealed tube; | A 60% B n/a C 20% |
Conditions | Yield |
---|---|
With potassium phosphate; 5,6-bis(5-methoxythiophen-2-yl)pyrazine-2,3-dicarbonitrile; oxygen; acetic acid In water; acetonitrile at 25℃; pH=12.7; Irradiation; chemoselective reaction; | 58% |
formaldehyd
N-acetyl-2-bromoaniline
A
2-methyl-4-oxo-3,1-benzoxazine
B
Acetanilid
Conditions | Yield |
---|---|
With potassium acetate; palladium diacetate; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene In o-xylene at 110℃; for 18h; Schlenk technique; Inert atmosphere; | A 45% B 50% |
2-methyl-1H-indole
A
2-methyl-4-oxo-3,1-benzoxazine
B
2-methyl-2-(2-methyl-1H-indol-3-yl)-1,2-dihydro-3H-indol-3-one
Conditions | Yield |
---|---|
With 2,2'-azobis(isobutyronitrile); Trimethylacetic acid In toluene at 60℃; | A 30% B 48% |
Conditions | Yield |
---|---|
With triethylamine In acetonitrile at 250℃; under 49403.3 Torr; for 16h; Heck Reaction; Autoclave; | 36% |
Conditions | Yield |
---|---|
With oxygen; copper diacetate; palladium diacetate; potassium carbonate In acetonitrile at 100℃; under 2280.15 Torr; for 24h; | 14% |
Conditions | Yield |
---|---|
at 130 - 150℃; |
N-formylanthranilic acid
acetic anhydride
A
bis-4H-3,1-benzoxazine-4-one
B
2-methyl-4-oxo-3,1-benzoxazine
acetic anhydride
2-((ethoxycarbonyl)amino)benzoic acid
2-methyl-4-oxo-3,1-benzoxazine
chloroformic acid ethyl ester
o-acetylamino-benzoic acid
2-methyl-4-oxo-3,1-benzoxazine
Conditions | Yield |
---|---|
With triethylamine In benzene Ambient temperature; |
2-[1-Methoxy-eth-(Z)-ylideneamino]-benzoic acid
A
methanol
B
2-methyl-4-oxo-3,1-benzoxazine
Conditions | Yield |
---|---|
Equilibrium constant; |
Conditions | Yield |
---|---|
With <(chlorosulfinyloxy)methylene>dimethylammonium chloride; triethylamine 1.) CH2Cl2, 0-5 deg C, 10 min, 2.) CH2Cl2, RT, overnight; Yield given. Multistep reaction; | |
With triphenyl phosphite In pyridine at 150℃; for 0.166667h; microwave irradiation; | |
With pyridine Reflux; |
Conditions | Yield |
---|---|
With Tl(OOCCF3)2; magnesium oxide; lithium chloride; palladium dichloride 1)Tl(OOCCF3)2/CF3COOH,r.t.,overnight 2)PdCl2/MgO/LiCl/MeOH,r.t.,overnight; Yield given. Multistep reaction; |
Conditions | Yield |
---|---|
at 100℃; |
Conditions | Yield |
---|---|
With 1,4-diaza-bicyclo[2.2.2]octane for 1h; Product distribution; Ambient temperature; various acylanthraniles; various alcohols; other bases, temperatures and times; | 100% |
With 1,4-diaza-bicyclo[2.2.2]octane for 1h; Ambient temperature; | 100% |
With ammonia In methanol for 1h; Ambient temperature; | 95% |
2-methyl-4-oxo-3,1-benzoxazine
2-(Diethylamino)ethanol
β-(diethylamino)ethyl o-acetamidobenzoate
Conditions | Yield |
---|---|
at 100℃; for 1h; | 100% |
2-methyl-4-oxo-3,1-benzoxazine
1,3-dimethoxy-2-nitrobenzene
3-(2,6-dimethoxyphenyl)-2-methyl-3H-quinazolin-4-one
Conditions | Yield |
---|---|
With acetic acid Heating / reflux; | 100% |
Conditions | Yield |
---|---|
Stage #1: 2-methyl-4-oxo-3,1-benzoxazine With hydrazine hydrate In tetrahydrofuran Stage #2: With sodium hydroxide In tetrahydrofuran; water | 99% |
Stage #1: 2-methyl-4-oxo-3,1-benzoxazine In ethanol at 20℃; for 0.0833333h; Stage #2: With hydrazine hydrate In ethanol at 100℃; for 6h; | 99.54% |
With pyridine; hydrazine hydrate for 5h; Heating; | 82% |
2-methyl-4-oxo-3,1-benzoxazine
tert-butyl alcohol
tert-butyl o-acetamidobenzoate
Conditions | Yield |
---|---|
With sodium t-butanolate for 3h; Heating; | 99% |
Conditions | Yield |
---|---|
Stage #1: 2-methyl-4-oxo-3,1-benzoxazine In ethanol at 20℃; for 0.0833333h; Stage #2: hexadecylamine In ethanol at 100℃; for 6h; | 98.1% |
2-methyl-4-oxo-3,1-benzoxazine
3-Aminobenzamide
3-(3-carbamoylphenyl)-2-methylquinazolin-4(3H)-one
Conditions | Yield |
---|---|
With acetic acid Reflux; | 98% |
In acetic acid Reflux; |
Conditions | Yield |
---|---|
With 1,8-diazabicyclo[5.4.0]undec-7-ene In 1,4-dioxane for 0.166667h; Inert atmosphere; Sealed tube; Microwave irradiation; Heating; | 97% |
In ethanol for 1h; Ambient temperature; | 90% |
With sodium methylate for 1h; Ambient temperature; | 88% |
2-methyl-4-oxo-3,1-benzoxazine
naphthalen-2-ylamine
2-methyl-3-(naphthalen-2-yl)quinazolin-4(3H)-one
Conditions | Yield |
---|---|
Stage #1: 2-methyl-4-oxo-3,1-benzoxazine In ethanol at 20℃; for 0.0833333h; Stage #2: naphthalen-2-ylamine In ethanol at 100℃; for 6h; | 96.44% |
Conditions | Yield |
---|---|
With sodium hydroxide for 3h; Heating; | 96% |
2-methyl-4-oxo-3,1-benzoxazine
4-bromo-aniline
3-(4-bromophenyl)-2-methylquinazolin-4(3H)-one
Conditions | Yield |
---|---|
Stage #1: 2-methyl-4-oxo-3,1-benzoxazine In ethanol at 20℃; for 0.0833333h; Stage #2: 4-bromo-aniline In ethanol at 100℃; for 6h; | 95.13% |
at 80℃; for 2.5h; Molecular sieve; Green chemistry; | 53% |
Heating; | 30% |
With trichlorophosphate Heating; |
BPA
2-methyl-4-oxo-3,1-benzoxazine
2,2-Bis-<4-(2-N-acetylamino-benzoyloxy)-phenyl>-propan
Conditions | Yield |
---|---|
With pyridine for 3h; Heating; | 95% |
2-methyl-4-oxo-3,1-benzoxazine
ethyl 2-cyanoacetate
3-(2-Acetylamino-phenyl)-2-cyano-3-oxo-propionic acid ethyl ester
Conditions | Yield |
---|---|
With potassium tert-butylate In tert-butyl alcohol 1.) r.t., 1 h, 2.) r.t., 2 h; | 95% |
2-methyl-4-oxo-3,1-benzoxazine
2-methyl-6-nitro-4H-benzo[d][1,3]oxazin-4-one
Conditions | Yield |
---|---|
With sulfuric acid; nitric acid Heating; | 95% |
2-methyl-4-oxo-3,1-benzoxazine
4-chloro-aniline
3-(4-chlorophenyl)-2-methyl-3H-quinazolin-4-one
Conditions | Yield |
---|---|
Stage #1: 2-methyl-4-oxo-3,1-benzoxazine In ethanol at 20℃; for 0.0833333h; Stage #2: 4-chloro-aniline In ethanol at 100℃; for 6h; | 94.78% |
With sodium acetate In acetic acid for 5h; Reflux; | 89% |
at 80℃; for 2h; Molecular sieve; Green chemistry; | 89% |
2-methyl-4-oxo-3,1-benzoxazine
1,6-hexanediol
hexamethylene bis(o-acetamidobenzoate)
Conditions | Yield |
---|---|
With pyridine for 0.5h; Ambient temperature; | 94% |
2-chloro-3-aminopyridine
2-methyl-4-oxo-3,1-benzoxazine
2-methyl-3-(2'-chloropyrid-3'-yl)quinazolin-4-one
Conditions | Yield |
---|---|
at 140℃; for 2h; | 92% |
2-methyl-4-oxo-3,1-benzoxazine
4-amino-phenol
1-(2-methyl-4-oxo-4H-quinazolin-3-yl)-4-hydroxybenzene
Conditions | Yield |
---|---|
With acetic acid for 4h; Reflux; | 92% |
In N,N-dimethyl-formamide at 140℃; for 4h; | 79% |
In N,N-dimethyl-formamide for 2h; Heating; | 71% |
2-methyl-4-oxo-3,1-benzoxazine
2-methyl-3-(3-carboxyphenyl)-quinazolin-4(3H)-one
Conditions | Yield |
---|---|
With methanol vapor at 25℃; for 15h; | 92% |
2-methyl-4-oxo-3,1-benzoxazine
meta-aminobenzoic acid
2-methyl-3-(3-carboxyphenyl)-quinazolin-4(3H)-one
Conditions | Yield |
---|---|
With acetic acid for 5h; Reflux; | 92% |
With acetic acid for 5h; Reflux; | 92% |
In acetic acid Reflux; | |
With acetic acid for 5h; Reflux; |
Conditions | Yield |
---|---|
With ammonium hydroxide In ethanol at 20℃; for 48h; Substitution; | 91% |
With ammonia In ethanol for 2h; Reflux; | 85% |
With formamide for 3h; Heating; | 85% |
2-methyl-4-oxo-3,1-benzoxazine
2-(3,4-dimethoxyphenyl)-ethylamine
3-[2-(3,4-dimethoxy phenyl)-ethyl]-2-methyl-3H-quinazoline-4-one
Conditions | Yield |
---|---|
In N,N-dimethyl-formamide Reflux; Inert atmosphere; | 90% |
2-methyl-4-oxo-3,1-benzoxazine
tryptamine
3-[2-(3-indolyl)ethyl]-2-methyl-4(3H)-quinazolinone
Conditions | Yield |
---|---|
at 205℃; for 1.5h; | 89% |
With acetic acid for 5h; Reflux; |
2-methyl-4-oxo-3,1-benzoxazine
aniline
2-Methyl-3-phenyl-4(3H)-quinazolinone
Conditions | Yield |
---|---|
With pyridine; phosphorus pentoxide at 90 - 95℃; for 26h; | 89% |
With pyridine; phosphorus pentoxide at 90 - 95℃; for 26h; | 89% |
at 80℃; for 3h; Molecular sieve; Green chemistry; | 74% |
2-methyl-4-oxo-3,1-benzoxazine
2-acetamidobenzamide
Conditions | Yield |
---|---|
With ammonium hydroxide In benzene at 23℃; for 1h; Product distribution; | 89% |
With ammonium hydroxide In tetrahydrofuran at 20℃; for 0.25h; | |
With ammonia In water at 20℃; for 4h; |
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