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Dayang Chem (Hangzhou) Co.,Ltd.

DayangChem exported this product to many countries and regions at best price. If you are looking for the material's manufacturer or supplier in China, DayangChem is your best choice. Pls contact with us freely for getting detailed product spe

Ethylurea Manufacturer/High quality/Best price/In stock

Cas:625-52-5

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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

N-Ethylurea

Cas:625-52-5

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

inquiry

Henan Tianfu Chemical Co., Ltd.

Our company was built in 2009 with an ISO certificate.In the past 5 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

TIANFU-CHEM 625-52-5 Ethylurea

Cas:625-52-5

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Hebei Nengqian Chemical Import and Export Co., LTD

Our Advantage Rich Experience Our products are sold all over Europe,North&South America, Sino-East, Asia and pacific area as well as Africa,we establish long term. Quality service Company cooperates with research institutes. We strictly con

625-52-5 Ethylurea

Cas:625-52-5

Min.Order:1 Kilogram

FOB Price: $15.0 / 50.0

Type:Trading Company

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 625-52-5 with best quality

Cas:625-52-5

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

inquiry

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

Hot Sell Factory Supply Raw Material CAS 625-52-5 Ethylurea

Cas:625-52-5

Min.Order:10 Kilogram

Negotiable

Type:Trading Company

inquiry

Shanghai Upbio Tech Co.,Ltd

1.In No Less 10 years exporting experience. you 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 Specializ

Urea, N-ethyl-

Cas:625-52-5

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Shandong Hanjiang Chemical Co., Ltd.

Hello, 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

Urea, N-ethyl-

Cas:625-52-5

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Henan Wentao Chemical Product Co., Ltd.

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

CAS NO.:625-52-5

Cas:625-52-5

Min.Order:0

Negotiable

Type:Lab/Research institutions

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

Ethylurea

Cas:625-52-5

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 Ethylurea

Cas:625-52-5

Min.Order:0 Metric Ton

Negotiable

Type:Other

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

Ethylurea

Cas:625-52-5

Min.Order:100 Gram

FOB Price: $100.0 / 2000.0

Type:Lab/Research institutions

inquiry

Wuhan Fortuna Chemical Co.,Ltd

CAS:625-52-5 EINECS:210-898-8 MW:88.11 MF:C3H8N2O Melting point:87-90 °C(lit.) Appearance:White crystalline powder Package:25kg/drum Transportation:by sea/air/courier Port:Shanghai

Ethylurea

Cas:625-52-5

Min.Order:0 Metric Ton

Negotiable

Type:Trading Company

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

Ethylurea

Cas:625-52-5

Min.Order:1 Kilogram

FOB Price: $18.0 / 20.0

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

Ethylurea

Cas:625-52-5

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

625-52-5 CAS NO.625-52-5

Cas:625-52-5

Min.Order:1 Metric Ton

FOB Price: $7.0 / 8.0

Type:Trading Company

inquiry

Hunan chemfish Pharmaceutical co.,Ltd

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

N-Ethylurea

Cas:625-52-5

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

SAGECHEM LIMITED

SAGECHEM is a chemical R&D, manufacturing and distribution company in China since 2009, including pharmaceutical intermediates, agrochemical, dyestuff intermediates, organosilicone, API and etc. We also offer a full range of services in custom synthe

SAGECHEM/Ethylurea/SAGECHEM/Manufacturer in China

Cas:625-52-5

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Triumph International Development Limilted

Triumph has the complete production of G- KG - MT service chain,we can make the new technology into productivity quickly in the research and development of new products. Main Business Custom Synthesis:

Urea, N-ethyl-

Cas:625-52-5

Min.Order:0

Negotiable

Type:Lab/Research institutions

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

Ethylurea

Cas:625-52-5

Min.Order:1 Metric Ton

FOB Price: $1.0

Type:Trading Company

inquiry

Hebei Mojin Biotechnology Co.,Ltd

1, High quality with competitive price:2, Fast and safe delivery3.Excellent pre-sales and after-sales service4. Well-trained and professional technologist and sales with rich experience in the field for 5-10 yearsAppearance:see detailed specification

Urea, N-ethyl-

Cas:625-52-5

Min.Order:0

Negotiable

Type:Trading Company

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

Ethylurea

Cas:625-52-5

Min.Order:0

Negotiable

Type:Other

inquiry

GIHI CHEMICALS CO.,LIMITED

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

Ethylurea

Cas:625-52-5

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Shanghai Acmec Biochemical Technology Co., Ltd.

Acmec is a leading manufacturer and supplier of biochemical reagents and life science products. We have over 40,000 items in stock (real-time inventory) and offer discounted prices to registered members of the online store ( www.acmec.com.cn ) Appea

Acmec N-Ethylurea 100g

Cas:625-52-5

Min.Order:1 bottle

Negotiable

Type:Lab/Research institutions

inquiry

Henan Allgreen Chemical Co.,Ltd

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

Ethylurea

Cas:625-52-5

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Hubei Taiho Chemical Co.,LTD

TAIHO Unique Advantages:1.We're factory2.Free samples available3.Commodity inspection can be done4.ISO9001,Kosher certifications5.10 years experiences Storage:Store in cool &dry place Package:aluminium foil bag/fiber can/plastic drum Application:comp

Ethylurea

Cas:625-52-5

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

Urea, N-ethyl-

Cas:625-52-5

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

Ethylurea

Cas:625-52-5

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hubei Langyou International Trading Co., Ltd

Ethylurea Application:Ethylurea

Ethylurea

Cas:625-52-5

Min.Order:0

Negotiable

Type:Other

inquiry

Changchun Artel lmport and Export trade company

Supply top quality products with a reasonable price Application:api

625-52-5

Cas:625-52-5

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Synthetic route

S-methyl N-ethylthiocarbamate
39076-43-2

S-methyl N-ethylthiocarbamate

A

N-Ethylurea
625-52-5

N-Ethylurea

B

sodium thiomethoxide
5188-07-8

sodium thiomethoxide

Conditions
ConditionsYield
With ammonia In water at 60℃; for 4h;A 98.5%
B 95%
S-methyl N-ethylthiocarbamate
39076-43-2

S-methyl N-ethylthiocarbamate

N-Ethylurea
625-52-5

N-Ethylurea

Conditions
ConditionsYield
With ammonia In ethyl acetate93%
With ammonium hydroxide In 1,4-dioxane at 70℃; for 6h;
Propionamid
79-05-0

Propionamid

N-Ethylurea
625-52-5

N-Ethylurea

Conditions
ConditionsYield
With [bis(acetoxy)iodo]benzene; ammonia In methanol at 0 - 20℃; for 2h; Hofmann Rearrangement; Inert atmosphere;84%
Ethyl isothiocyanate
542-85-8

Ethyl isothiocyanate

N-Ethylurea
625-52-5

N-Ethylurea

Conditions
ConditionsYield
With diethyl ether; hydroxylamine
N-ethyl-N'-hydroxy-thiourea
25684-38-2

N-ethyl-N'-hydroxy-thiourea

N-Ethylurea
625-52-5

N-Ethylurea

Conditions
ConditionsYield
With water
With ethanol
ethanol
64-17-5

ethanol

ethyl allophanate
626-36-8

ethyl allophanate

ethylamine
75-04-7

ethylamine

N-Ethylurea
625-52-5

N-Ethylurea

Conditions
ConditionsYield
at 150℃;
1-methyl-1-nitrosourea
684-93-5

1-methyl-1-nitrosourea

ethylamine
75-04-7

ethylamine

N-Ethylurea
625-52-5

N-Ethylurea

Conditions
ConditionsYield
With water
nitrourea
556-89-8

nitrourea

ethylamine
75-04-7

ethylamine

N-Ethylurea
625-52-5

N-Ethylurea

ethyl allophanate
626-36-8

ethyl allophanate

ethylamine
75-04-7

ethylamine

N-Ethylurea
625-52-5

N-Ethylurea

Conditions
ConditionsYield
at 150℃;
With ethanol at 150℃;
at 150℃; oder in alkoh. Loesung;
N-ethyl-N'-nitro-guanidine
39197-62-1

N-ethyl-N'-nitro-guanidine

ethylamine
75-04-7

ethylamine

N-Ethylurea
625-52-5

N-Ethylurea

Conditions
ConditionsYield
With water
ethyl isocyanate
109-90-0

ethyl isocyanate

N-Ethylurea
625-52-5

N-Ethylurea

Conditions
ConditionsYield
With ammonia
2-hydroxyphenyl carbamate
35580-87-1

2-hydroxyphenyl carbamate

ethylamine
75-04-7

ethylamine

N-Ethylurea
625-52-5

N-Ethylurea

Conditions
ConditionsYield
In ethanol Heating;
hydrogenchloride
7647-01-0

hydrogenchloride

2-ethylamino-thiazol-4-one
37704-67-9

2-ethylamino-thiazol-4-one

barium chlorate

barium chlorate

A

N-Ethylurea
625-52-5

N-Ethylurea

B

sulfoacetic acid
123-43-3

sulfoacetic acid

Conditions
ConditionsYield
folgend Eindampfen der von Barium befreiten Loesung;
1-ethyl-2,4,5-trioxoimidazolidine
57012-86-9

1-ethyl-2,4,5-trioxoimidazolidine

aq. barium hydroxide solution

aq. barium hydroxide solution

A

N-Ethylurea
625-52-5

N-Ethylurea

B

oxalic acid
144-62-7

oxalic acid

cyanic acid
420-05-3

cyanic acid

water
7732-18-5

water

ethylamine
75-04-7

ethylamine

N-Ethylurea
625-52-5

N-Ethylurea

Conditions
ConditionsYield
at 18℃; Rate constant;
at 60℃; Rate constant;
ammonium hydroxide

ammonium hydroxide

ethyl isocyanate
109-90-0

ethyl isocyanate

N-Ethylurea
625-52-5

N-Ethylurea

N-nitro-N'-ethyl-urea

N-nitro-N'-ethyl-urea

ammonia
7664-41-7

ammonia

N-Ethylurea
625-52-5

N-Ethylurea

potassium cyanate
590-28-3

potassium cyanate

ethylammonium sulfate

ethylammonium sulfate

N-Ethylurea
625-52-5

N-Ethylurea

N-acetyl-N'-ethyl-urea
71317-09-4

N-acetyl-N'-ethyl-urea

KOH-solution

KOH-solution

N-Ethylurea
625-52-5

N-Ethylurea

N-ethyl-N’-propionylurea
115802-11-4

N-ethyl-N’-propionylurea

nitric acid
7697-37-2

nitric acid

A

N-Ethylurea
625-52-5

N-Ethylurea

B

propionic acid
802294-64-0

propionic acid

(2-hydroxyethyl)urea
2078-71-9

(2-hydroxyethyl)urea

ethyl ether-ethyl acetate

ethyl ether-ethyl acetate

ethanolamine
141-43-5

ethanolamine

A

2-(tetrafluoroethoxy)ethylurea

2-(tetrafluoroethoxy)ethylurea

B

N-Ethylurea
625-52-5

N-Ethylurea

Conditions
ConditionsYield
In DMF-THF
C3H6ClNOS

C3H6ClNOS

N-Ethylurea
625-52-5

N-Ethylurea

Conditions
ConditionsYield
With 1,4-diaza-bicyclo[2.2.2]octane; N-benzyl-N,N,N-triethylammonium chloride; ammonia; boric acid; sodium chloride; sodium hydroxide In dichloromethane; water at 25 - 40℃; pH=10 - 10.5;41.1 g
ethylamine
75-04-7

ethylamine

urea
57-13-6

urea

N-Ethylurea
625-52-5

N-Ethylurea

Conditions
ConditionsYield
With hydrogenchloride In water at 0℃; for 3.16667h; Reflux;
C11H21N3O4S

C11H21N3O4S

A

N-Ethylurea
625-52-5

N-Ethylurea

B

N-acetyl-L-methionine methyl ester sulfoxide
132436-46-5

N-acetyl-L-methionine methyl ester sulfoxide

Conditions
ConditionsYield
In deuteromethanol at 37℃; Kinetics;
potassium cyanate
590-28-3

potassium cyanate

ethylamine
75-04-7

ethylamine

N-Ethylurea
625-52-5

N-Ethylurea

Conditions
ConditionsYield
With hydrogenchloride In water at 60℃; for 16h;
With hydrogenchloride In water
N-Ethylurea
625-52-5

N-Ethylurea

benzaldehyde
100-52-7

benzaldehyde

1,1-(phenylmethylene)bis(3-ethylurea)
1093615-33-8

1,1-(phenylmethylene)bis(3-ethylurea)

Conditions
ConditionsYield
In acetonitrile at 20℃; for 5h;100%
In acetonitrile at 20℃; for 1.5h;
N-Ethylurea
625-52-5

N-Ethylurea

(-)-Cyclohexenylethylcyanessigester
7146-80-7, 73352-37-1, 98459-43-9

(-)-Cyclohexenylethylcyanessigester

5-Cyclohex-1-enyl-3,5-diethyl-6-imino-dihydro-pyrimidine-2,4-dione
73362-86-4

5-Cyclohex-1-enyl-3,5-diethyl-6-imino-dihydro-pyrimidine-2,4-dione

Conditions
ConditionsYield
98%
N-Ethylurea
625-52-5

N-Ethylurea

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

triphenylphosphine
603-35-0

triphenylphosphine

dimethyl 2-{[(methylamino)carbonyl]amino}-3-(1,1,1-triphenyl-λ5-phosphanylidene)succinate
1228602-33-2

dimethyl 2-{[(methylamino)carbonyl]amino}-3-(1,1,1-triphenyl-λ5-phosphanylidene)succinate

Conditions
ConditionsYield
In hexane; ethyl acetate at 20℃; Michael condensation; chemoselective reaction;97%
bromobenzene
108-86-1

bromobenzene

N-Ethylurea
625-52-5

N-Ethylurea

carbon monoxide
201230-82-2

carbon monoxide

N-(ethylcarbamoyl)benzamide
28615-21-6

N-(ethylcarbamoyl)benzamide

Conditions
ConditionsYield
With dichloro(1,1'-bis(diphenylphosphanyl)ferrocene)palladium(II)*CH2Cl2; triethylamine In 1,4-dioxane at 100℃; under 3361.55 Torr; for 4h; Microwave irradiation; regioselective reaction;96%
N-Ethylurea
625-52-5

N-Ethylurea

ethyl 2-cyanoacetate
105-56-6

ethyl 2-cyanoacetate

1-ethyl-6-aminouracil
41862-09-3

1-ethyl-6-aminouracil

Conditions
ConditionsYield
With sodium ethanolate In ethanol for 6h; Heating;95%
With sodium ethanolate In ethanol for 24h; Reflux;45%
Stage #1: N-Ethylurea; ethyl 2-cyanoacetate With sodium ethanolate In ethanol for 6h; Heating / reflux;
Stage #2: With hydrogenchloride In water at 0℃; pH=7;
N-Ethylurea
625-52-5

N-Ethylurea

ethyl acetoacetate
141-97-9

ethyl acetoacetate

3-nitro-benzaldehyde
99-61-6

3-nitro-benzaldehyde

5-ethoxycarbonyl-1-ethyl-6-methyl-4-(3-nitrophenyl)-3,4-dihydropyrimidin-2(1H)-one

5-ethoxycarbonyl-1-ethyl-6-methyl-4-(3-nitrophenyl)-3,4-dihydropyrimidin-2(1H)-one

Conditions
ConditionsYield
With cerous p-toluenesulfonate tetrahydrate at 80℃; for 1h; Green chemistry;94%
N-Ethylurea
625-52-5

N-Ethylurea

ethyl acetoacetate
141-97-9

ethyl acetoacetate

2-chloro-benzaldehyde
89-98-5

2-chloro-benzaldehyde

ethyl 4-(2-chlorophenyl)-1-ethyl-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate

ethyl 4-(2-chlorophenyl)-1-ethyl-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate

Conditions
ConditionsYield
With cerous p-toluenesulfonate tetrahydrate at 80℃; for 1h; Green chemistry;92%
With boric acid In acetic acid at 100℃; for 2h; Biginelli reaction;52%
With boric acid; acetic acid at 100℃; for 2h; Biginelli reaction;52%
N-Ethylurea
625-52-5

N-Ethylurea

ethyl 6-chloro-4-(phenylamino)nicotinate
1012878-94-2

ethyl 6-chloro-4-(phenylamino)nicotinate

ethyl 6-(3-ethylureido)-4-(phenylamino)nicotinate
1445153-80-9

ethyl 6-(3-ethylureido)-4-(phenylamino)nicotinate

Conditions
ConditionsYield
With palladium diacetate; caesium carbonate; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene In 1,4-dioxane at 80℃; for 16.5h; Inert atmosphere;92%
N-Ethylurea
625-52-5

N-Ethylurea

ethyl 6-chloro-4-(1H-imidazol-1-yl)nicotinate
1623159-88-5

ethyl 6-chloro-4-(1H-imidazol-1-yl)nicotinate

ethyl 6-(3-ethylureido)-4-(1H-imidazol-1-yl)nicotinate
1623159-90-9

ethyl 6-(3-ethylureido)-4-(1H-imidazol-1-yl)nicotinate

Conditions
ConditionsYield
With potassium tert-butylate; palladium diacetate; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene In 1,4-dioxane; water at 20 - 100℃; for 16h; Buchwald-Hartwig Coupling; Inert atmosphere;92%
N-Ethylurea
625-52-5

N-Ethylurea

R-OOCCH(C3H7)COO-R; R=alkyl

R-OOCCH(C3H7)COO-R; R=alkyl

1-Ethyl-5-propyl-barbitursaeure
83128-54-5

1-Ethyl-5-propyl-barbitursaeure

Conditions
ConditionsYield
With sodium ethanolate In ethanol for 12h; Heating;91%
N-Ethylurea
625-52-5

N-Ethylurea

triphenylphosphine
603-35-0

triphenylphosphine

acetylenedicarboxylic acid diethyl ester
762-21-0

acetylenedicarboxylic acid diethyl ester

diethyl 2-{[(methylamino)carbonyl]amino}-3-(1,1,1-triphenyl-λ5-phosphanylidene)succinate
1228602-34-3

diethyl 2-{[(methylamino)carbonyl]amino}-3-(1,1,1-triphenyl-λ5-phosphanylidene)succinate

Conditions
ConditionsYield
In hexane; ethyl acetate at 20℃; Michael condensation; chemoselective reaction;90%
N-Ethylurea
625-52-5

N-Ethylurea

aniline
62-53-3

aniline

bis(diphenyl)urea
102-07-8

bis(diphenyl)urea

Conditions
ConditionsYield
With benzoic acid In para-xylene at 130℃; for 8h; Inert atmosphere; Schlenk technique;90%
N-Ethylurea
625-52-5

N-Ethylurea

8-hydroxy-8,8a-diphenyltetrahydro-2H-imidazo[5,1-b][1,3]oxazin-6(7H)-one

8-hydroxy-8,8a-diphenyltetrahydro-2H-imidazo[5,1-b][1,3]oxazin-6(7H)-one

1-ethyl-6-(3-hydroxypropyl)-3a,6a-diphenyltetrahydroimidazo[4,5-d]imidazole-2,5(1H,3H)-dione

1-ethyl-6-(3-hydroxypropyl)-3a,6a-diphenyltetrahydroimidazo[4,5-d]imidazole-2,5(1H,3H)-dione

Conditions
ConditionsYield
With hydrogenchloride In methanol; water for 8h; Reflux;90%
N-Ethylurea
625-52-5

N-Ethylurea

ethyl acetoacetate
141-97-9

ethyl acetoacetate

3-tolyl isocyanate
621-29-4

3-tolyl isocyanate

1,2-dihydro-1-ethyl-6-methyl-2-oxo-4-(m-tolylamino)-5-pyrimidinecarboxylic acid

1,2-dihydro-1-ethyl-6-methyl-2-oxo-4-(m-tolylamino)-5-pyrimidinecarboxylic acid

Conditions
ConditionsYield
Stage #1: ethyl acetoacetate; 3-tolyl isocyanate With 1,8-diazabicyclo[5.4.0]undec-7-ene In toluene for 6h; Schlenk technique;
Stage #2: N-Ethylurea In toluene Reflux; Schlenk technique;
89%
pyrimidine-2,4,5,6(1H,3H)-tetraone
61066-33-9, 61066-34-0, 61066-35-1, 61127-23-9

pyrimidine-2,4,5,6(1H,3H)-tetraone

N-Ethylurea
625-52-5

N-Ethylurea

1-ethyl-4-hydroxy-2,5-dioxo-imidazolidine-4-carboxylic acid carbamoylamide
71886-24-3

1-ethyl-4-hydroxy-2,5-dioxo-imidazolidine-4-carboxylic acid carbamoylamide

Conditions
ConditionsYield
In water at 90℃;88%
With water
N-Ethylurea
625-52-5

N-Ethylurea

benzaldehyde
100-52-7

benzaldehyde

β-naphthol
135-19-3

β-naphthol

C20H20O2N2

C20H20O2N2

Conditions
ConditionsYield
With Indion-130 resin at 110℃; for 0.25h;88%
N-Ethylurea
625-52-5

N-Ethylurea

7-hydroxy-7,7a-diphenyltetrahydroimidazo[5,1-b]oxazol-5(5H)-one

7-hydroxy-7,7a-diphenyltetrahydroimidazo[5,1-b]oxazol-5(5H)-one

1-ethyl-6-(2-hydroxyethyl)-3a,6a-diphenyltetrahydroimidazo[4,5-d]imidazole-2,5(1H,3H)-dione

1-ethyl-6-(2-hydroxyethyl)-3a,6a-diphenyltetrahydroimidazo[4,5-d]imidazole-2,5(1H,3H)-dione

Conditions
ConditionsYield
With hydrogenchloride In water; acetonitrile for 0.333333h; Reflux;88%
N-Ethylurea
625-52-5

N-Ethylurea

p-toluidine
106-49-0

p-toluidine

1,3-di-p-tolylurea
621-00-1

1,3-di-p-tolylurea

Conditions
ConditionsYield
With benzoic acid In para-xylene at 130℃; for 8h; Inert atmosphere; Schlenk technique;87%
N-Ethylurea
625-52-5

N-Ethylurea

ethyl acetoacetate
141-97-9

ethyl acetoacetate

acetaldehyde
75-07-0

acetaldehyde

ethyl 1-ethyl-4,6-dimethyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate

ethyl 1-ethyl-4,6-dimethyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate

Conditions
ConditionsYield
With protonated penta-6-hydroxypurine bismuth chloride cluster chlorine complex In ethanol for 6h; Biginelli Pyrimidone Synthesis; Reflux; Green chemistry;87%
N-Ethylurea
625-52-5

N-Ethylurea

benzaldehyde
100-52-7

benzaldehyde

acetoacetic acid methyl ester
105-45-3

acetoacetic acid methyl ester

5-methoxycarbonyl-1-ethyl-6-methyl-4-phenyl-3,4-dihydropyrimidin-2(1H)-one

5-methoxycarbonyl-1-ethyl-6-methyl-4-phenyl-3,4-dihydropyrimidin-2(1H)-one

Conditions
ConditionsYield
With cerous p-toluenesulfonate tetrahydrate at 80℃; for 1h; Green chemistry;87%
N-Ethylurea
625-52-5

N-Ethylurea

4-methyl-benzaldehyde
104-87-0

4-methyl-benzaldehyde

ethyl acetoacetate
141-97-9

ethyl acetoacetate

5-ethoxycarbonyl-1-ethyl-6-methyl-4-(4-methylphenyl)-3,4-dihydropyrimidin-2(1H)-one

5-ethoxycarbonyl-1-ethyl-6-methyl-4-(4-methylphenyl)-3,4-dihydropyrimidin-2(1H)-one

Conditions
ConditionsYield
With cerous p-toluenesulfonate tetrahydrate at 80℃; for 1h; Green chemistry;87%
N-Ethylurea
625-52-5

N-Ethylurea

orthoformic acid triethyl ester
122-51-0

orthoformic acid triethyl ester

p-chlorobenzoylacetonitrile
4640-66-8

p-chlorobenzoylacetonitrile

2-(4-chlorobenzoyl)-3-(3-ethylureido)propenenitrile

2-(4-chlorobenzoyl)-3-(3-ethylureido)propenenitrile

Conditions
ConditionsYield
at 60 - 70℃; for 0.5h; Knoevenagel condensation;86%
4-benzoyl-1-(4-nitrophenyl)-5-phenyl-1H-pyrazole-3-carboxylic acid chloride
658081-82-4

4-benzoyl-1-(4-nitrophenyl)-5-phenyl-1H-pyrazole-3-carboxylic acid chloride

N-Ethylurea
625-52-5

N-Ethylurea

N-[4-benzoyl-1-(4-nitrophenyl)-5-phenyl-1H-pyrazole-3-carbonyl]-N'-ethylurea
1628798-96-8

N-[4-benzoyl-1-(4-nitrophenyl)-5-phenyl-1H-pyrazole-3-carbonyl]-N'-ethylurea

Conditions
ConditionsYield
In 5,5-dimethyl-1,3-cyclohexadiene for 4h; Reflux;86%
N-Ethylurea
625-52-5

N-Ethylurea

ethyl acetoacetate
141-97-9

ethyl acetoacetate

meta-hydroxybenzaldehyde
100-83-4

meta-hydroxybenzaldehyde

5-ethoxycarbonyl-1-ethyl-6-methyl-4-(3-hydroxyphenyl)-3,4-dihydropyrimidin-2(1H)-one

5-ethoxycarbonyl-1-ethyl-6-methyl-4-(3-hydroxyphenyl)-3,4-dihydropyrimidin-2(1H)-one

Conditions
ConditionsYield
With cerous p-toluenesulfonate tetrahydrate at 80℃; for 1h; Green chemistry;86%
oxalyl dichloride
79-37-8

oxalyl dichloride

N-Ethylurea
625-52-5

N-Ethylurea

1-ethyl-2,4,5-trioxoimidazolidine
57012-86-9

1-ethyl-2,4,5-trioxoimidazolidine

Conditions
ConditionsYield
In benzene at 20℃;85%
In diethyl ether for 2h; Reflux;80%
N-Ethylurea
625-52-5

N-Ethylurea

2,4-Dichloro-6-hydrazonomethyl-phenol
43002-22-8

2,4-Dichloro-6-hydrazonomethyl-phenol

6,8-dichloro-3-ethyl-4-hydrazino-3,4-dihydro-benzo[e][1,3]oxazin-2-one

6,8-dichloro-3-ethyl-4-hydrazino-3,4-dihydro-benzo[e][1,3]oxazin-2-one

Conditions
ConditionsYield
With Montmorillonite K-10 clay for 0.1h; microwave irradiation;85%
N-Ethylurea
625-52-5

N-Ethylurea

aniline
62-53-3

aniline

5-bromosalicyclaldehyde
1761-61-1

5-bromosalicyclaldehyde

6-bromo-3-ethyl-4-phenylamino-3,4-dihydro-benzo[e][1,3]oxazin-2-one

6-bromo-3-ethyl-4-phenylamino-3,4-dihydro-benzo[e][1,3]oxazin-2-one

Conditions
ConditionsYield
With Montmorillonite K-10 clay In dichloromethane for 0.166667h; microwave irradiation;85%

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