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
Cas:31374-18-2
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inquiryHigh quality. Factory supply. In stock. Best price. 1.Quick response within 24 hours; 2.Best quality in your requirement; 3.We pay more attention on delivery time, and usually ship on time; 4.Under the premise of safety and effectiveness, we can pr
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inquiryProduct Description Product website: http://www.finerchem.com/pro01en/id/982.html Product Name 7-Chloroquinazolin-4(3H)-one CAS No. 31374-18
Cas:31374-18-2
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inquiryOur company engages in Sodium Tripolyphosphate (STPP) and Sodium Hexametabphosphate (SHMP) production; development of noble metal catalysts, synthesis of electronic chemical materials and general chemicals Imp&Exp trading business. The company
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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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inquiry7-CHLORO-4-QUINAZOLINOL CAS:31374-18-2 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 organic i
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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
Cas:31374-18-2
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inquiryHenan 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
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 present
Cas:31374-18-2
Min.Order:1 Gram
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inquiryCompany Introduction 1. Established in 2005, with two independent business divisions: Fine chemicals division; Pharmaceutical division. 2. Main product: Optical brightener Textile auxiliary Dye stuff Pigments
Cas:31374-18-2
Min.Order:1 Gram
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Type:Lab/Research institutions
inquiryJ&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
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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
Cas:31374-18-2
Min.Order:10 Gram
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inquiryHunan chemfish Pharmaceutical co.,Ltd.located in Lugu High-tech industral park ,Hunan province . with its own R&D center and more than 10000㎡manufacture plant . Chemfish owns 40 reactors from 1000L to 8000L. With complete auxiliary equipment as
Cas:31374-18-2
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inquiryWe 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
Stock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai
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inquiryLower price, sample is available,SDS test documents are available,large stock in warehouseAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:Fine chemical intermediates, used as the main raw material for the synthe
Cas:31374-18-2
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inquiryhigh 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
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
Cas:31374-18-2
Min.Order:1 bottle
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inquiryhigh 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
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
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inquiry★.Best quality according to requirement ★.Competitive price in China market ★.Mature Technical support ★.Professional logistic support
Cas:31374-18-2
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inquiryWe product this chemical more than 10 years . We are very experience to export it to many countries, Our superior & stable quality , competitive price gain warm reception from our customers. Application:Chemical intermediate
good quality, competitive price, thoughtful after sale serviceAppearance:white powder Storage:Keep it in dry,shady and cool place Package:25kg,50kg,180kg,200kg,250kg,1000kg,customization Application:Pharma;Industry;Agricultural;chemical reaserch Tran
Cas:31374-18-2
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inquiry7-Chloroquinazolin-4(3H)-one cas 31374-18-2Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express
Cas:31374-18-2
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inquiryfactory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
Cas:31374-18-2
Min.Order:0
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inquiryBest quality with low price Storage:ln stock Package:25kg/Barrel Application:Chemicals Transportation:Express/Sea/Air Port:Shanghai
Cas:31374-18-2
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inquiry31374-18-2 Application:intermediate
Cas:31374-18-2
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Type:Lab/Research institutions
inquirylow price and high purityAppearance:solid or liquid Storage:in sealed air resistant place Package:As customer require Application:Pharma;Industry;Agricultural Transportation:by sea or by airplane Port:any port in China
Cas:31374-18-2
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Type:Trading Company
inquiryformamide
2-Amino-4-chlorobenzoic acid
7-chloro-3,4-dihydroquinazolin-4-one
Conditions | Yield |
---|---|
With acetic acid; diethylamine at 150℃; for 2h; Product distribution / selectivity; | 96.1% |
With montmorillonite K-10 for 0.0666667h; microwave irradiation; | 94% |
at 130 - 160℃; for 5h; | 90.7% |
formamidine acetic acid
2-Amino-4-chlorobenzoic acid
7-chloro-3,4-dihydroquinazolin-4-one
Conditions | Yield |
---|---|
In water Microwave irradiation; | 95% |
In 2-methoxy-ethanol at 120℃; for 16h; | 88.1% |
In 2-methoxy-ethanol Reflux; | |
In 2-methoxy-ethanol for 18h; Reflux; | |
In 2-methoxy-ethanol at 130℃; |
methanol
2-amino-4-chlorobenzonitrile
7-chloro-3,4-dihydroquinazolin-4-one
Conditions | Yield |
---|---|
With cobalt(II) nitrate hexahydrate; tris(2-diphenylphosphinoethyl)phosphine; water; caesium carbonate at 150℃; for 36h; Inert atmosphere; Sealed tube; | 92% |
formamidinium acetate
2-Amino-4-chlorobenzoic acid
7-chloro-3,4-dihydroquinazolin-4-one
Conditions | Yield |
---|---|
In 2-methoxy-ethanol for 1.5h; Heating; | 89% |
formamide
7-chloro-3,4-dihydroquinazolin-4-one
Conditions | Yield |
---|---|
at 130 - 190℃; for 4.5h; | 87.7% |
6-amino-7-methoxy-4-(3'-methylanilino)quinazoline
ethoxyethoxyethanol
2-Amino-4-chlorobenzoic acid
7-chloro-3,4-dihydroquinazolin-4-one
Conditions | Yield |
---|---|
With formamide | 85% |
methanol
2-amino-4-chlorobenzamide
7-chloro-3,4-dihydroquinazolin-4-one
Conditions | Yield |
---|---|
With copper(l) iodide; oxygen; caesium carbonate at 20℃; for 16h; Irradiation; | 85% |
With [Cp*Ir(2,2′-bpyO)(H2O)]; caesium carbonate at 130℃; for 2h; Microwave irradiation; Green chemistry; | 70% |
With [Cp*Ir(2,2'-bpyO)(H2O)]; caesium carbonate at 130℃; for 2h; Inert atmosphere; Microwave irradiation; | 70% |
With oxygen; copper(II) acetate monohydrate; caesium carbonate at 110℃; for 6h; | 68% |
2-amino-4-chloro-benzoic acid methyl ester
formamide
7-chloro-3,4-dihydroquinazolin-4-one
Conditions | Yield |
---|---|
With acetic acid; diethylamine at 150℃; for 2h; Product distribution / selectivity; | 84.1% |
With formic acid at 145℃; for 12h; | 81% |
Niementowski Quinazolone Synthesis; | |
for 10h; Reflux; |
2-amino-4-chlorobenzamide
oxalic acid
7-chloro-3,4-dihydroquinazolin-4-one
Conditions | Yield |
---|---|
In 1,4-dioxane at 120℃; for 14h; Green chemistry; | 83% |
formamidine hydrochloride
2-Amino-4-chlorobenzoic acid
7-chloro-3,4-dihydroquinazolin-4-one
Conditions | Yield |
---|---|
at 210℃; for 0.25h; Cycloaddition; | 81% |
2-amino-4-chlorobenzamide
7-chloro-3,4-dihydroquinazolin-4-one
Conditions | Yield |
---|---|
With hydrogenchloride In water; trimethyl orthoformate | 77% |
4-chloro-2-iodobenzamide
formamidine
7-chloro-3,4-dihydroquinazolin-4-one
Conditions | Yield |
---|---|
With copper(l) iodide; potassium carbonate In N,N-dimethyl-formamide at 80℃; for 6h; Inert atmosphere; | 71% |
5-chloro-2-nitrobenzoic acid
ammonium formate
7-chloro-3,4-dihydroquinazolin-4-one
Conditions | Yield |
---|---|
With zinc for 0.108333h; microwave irradiation; | 70% |
formamide
A
7-chloro-3,4-dihydroquinazolin-4-one
Conditions | Yield |
---|---|
at 186℃; | A 16.2% B 51.5% |
formamide
A
7-chloro-3,4-dihydroquinazolin-4-one
Conditions | Yield |
---|---|
at 180 - 185℃; for 2h; | A 19.9% B 47.5% |
2-amino-4-chlorobenzonitrile
N,N-dimethyl-formamide
A
7-chloro-3,4-dihydroquinazolin-4-one
B
7-chloroquinazoline-2,4-dione
Conditions | Yield |
---|---|
With zinc(II) chloride at 200℃; for 5h; sealed tube; | A 35% B 36% |
2-amino-4-chlorobenzamide
orthoformic acid triethyl ester
7-chloro-3,4-dihydroquinazolin-4-one
Conditions | Yield |
---|---|
With diethylene glycol at 120℃; |
2-amino-4-chlorobenzamide
trimethyl orthoformate
7-chloro-3,4-dihydroquinazolin-4-one
Conditions | Yield |
---|---|
With hydrogenchloride |
2-Amino-4-chlorobenzoic acid
7-chloro-3,4-dihydroquinazolin-4-one
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 86 percent / Et3N / dioxane / 2 h / 20 °C 2: 16.2 percent / 186 °C View Scheme | |
Multi-step reaction with 2 steps 1: 74.4 percent / Et3N / dioxane / 3 h / 20 °C 2: 19.9 percent / 2 h / 180 - 185 °C View Scheme | |
With formamide for 5h; Heating / reflux; | |
Multi-step reaction with 2 steps 1: sulfuric acid / 9 h / Cooling with ice; Reflux 2: formic acid / 12 h / 145 °C View Scheme | |
Multi-step reaction with 2 steps 1: 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; benzotriazol-1-ol; ammonium chloride; N-ethyl-N,N-diisopropylamine / dimethyl sulfoxide / 15 h / 20 °C 2: copper(l) iodide; caesium carbonate; oxygen / 16 h / 20 °C / Irradiation View Scheme |
1,4-dioxane
2-amino-4-chlorobenzamide
orthoformic acid triethyl ester
7-chloro-3,4-dihydroquinazolin-4-one
Conditions | Yield |
---|---|
In 1-methyl-pyrrolidin-2-one |
4-chloro-2-nitro-benzoic acid
7-chloro-3,4-dihydroquinazolin-4-one
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: ammonium formate; 5%-palladium/activated carbon / ethanol / 6 h / Reflux 2: 4 h / Reflux View Scheme |
para-chlorobenzoic acid
7-chloro-3,4-dihydroquinazolin-4-one
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: nitric acid / water / 6 h / 60 °C / Cooling with ice 2: ammonium formate; 5%-palladium/activated carbon / ethanol / 6 h / Reflux 3: 4 h / Reflux View Scheme |
orthoformic acid triethyl ester
2-Amino-4-chlorobenzoic acid
7-chloro-3,4-dihydroquinazolin-4-one
Conditions | Yield |
---|---|
at 100℃; for 17h; | |
With ammonium acetate In ethanol at 110℃; for 0.333333h; Microwave irradiation; |
2-Amino-4-chlorobenzoic acid
formamidine
7-chloro-3,4-dihydroquinazolin-4-one
Conditions | Yield |
---|---|
In 2-methoxy-ethanol at 130℃; |
7-chloro-3,4-dihydroquinazolin-4-one
4-bromoethylbutanoate
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 70℃; for 10h; Alkylation; | 97% |
7-chloro-3,4-dihydroquinazolin-4-one
methyl 1-phenylprop-2-enyl carbonate
Conditions | Yield |
---|---|
With chloro(1,5-cyclooctadiene)rhodium(I) dimer; (R)-(+)-(6,6'-dimethoxybiphenyl-2,2'-diyl)bis[bis(3,5-di-tert-butylphenyl)phosphine] In 1,2-dichloro-ethane at 80℃; for 24h; Schlenk technique; Inert atmosphere; enantioselective reaction; | 96% |
7-chloro-3,4-dihydroquinazolin-4-one
benzylamine
N-benzyl-7-chloroquinazolin-4-amine
Conditions | Yield |
---|---|
With ammonium sulfate; 1,1,1,3,3,3-hexamethyl-disilazane at 125℃; for 2h; | 95% |
7-chloro-3,4-dihydroquinazolin-4-one
4,7-dichloroquinazoline
Conditions | Yield |
---|---|
With trichlorophosphate at 100℃; for 3h; | 94.828% |
With oxalyl dichloride In chloroform; N,N-dimethyl-formamide at 20 - 60℃; | 80% |
With oxalyl dichloride In chloroform; N,N-dimethyl-formamide at 60℃; Cooling with ice; | 80% |
7-chloro-3,4-dihydroquinazolin-4-one
4-cyclohexyl-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylic acid diethyl ester
Conditions | Yield |
---|---|
Stage #1: 7-chloro-3,4-dihydroquinazolin-4-one; 4-cyclohexyl-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylic acid diethyl ester With trifluoroacetic acid In 2,2,2-trifluoroethanol at 20℃; for 4h; Sealed tube; Irradiation; Inert atmosphere; Stage #2: In 2,2,2-trifluoroethanol at 20℃; for 4h; | 93% |
Stage #1: 7-chloro-3,4-dihydroquinazolin-4-one; 4-cyclohexyl-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylic acid diethyl ester With trifluoroacetic acid In 2,2,2-trifluoroethanol at 35℃; for 4h; Irradiation; Inert atmosphere; Sealed tube; Stage #2: In 2,2,2-trifluoroethanol for 4h; Irradiation; Inert atmosphere; | 93% |
7-chloro-3,4-dihydroquinazolin-4-one
7-chloro-6-nitro-4(3H)-quinazolinone
Conditions | Yield |
---|---|
With sulfuric acid; nitric acid at 50 - 90℃; | 92.6% |
With sulfuric acid; nitric acid at 0 - 90℃; for 3h; | 72% |
With sulfuric acid; nitric acid at 90℃; for 3h; Cooling with ice; | 71.2% |
7-chloro-3,4-dihydroquinazolin-4-one
1-oxa-6-aza-spiro-[2.5]octane-6-caboxylic acid tert-butyl ester
tert-butyl 4-[(7-chloro-4-oxo-3,4-dihydroquinazolin-3-yl)methyl]-4-hydroxypiperidine-1-carboxylate
Conditions | Yield |
---|---|
With caesium carbonate In N,N-dimethyl-formamide at 80℃; | 85% |
With caesium carbonate In N,N-dimethyl-formamide at 80℃; | 85% |
With potassium carbonate In N,N-dimethyl-formamide at 80℃; for 12h; | 83.7% |
With caesium carbonate In N,N-dimethyl-formamide at 80℃; | 68% |
7-chloro-3,4-dihydroquinazolin-4-one
1-bromomethyl-4-nitro-benzene
Conditions | Yield |
---|---|
Stage #1: 7-chloro-3,4-dihydroquinazolin-4-one With sodium methylate In methanol for 0.166667h; Metallation; Stage #2: 1-bromomethyl-4-nitro-benzene In methanol at 20℃; for 0.5h; Condensation; | 81.6% |
7-chloro-3,4-dihydroquinazolin-4-one
2-bromo-1-phenyl-1-propanone
Conditions | Yield |
---|---|
Stage #1: 7-chloro-3,4-dihydroquinazolin-4-one With sodium methylate In methanol for 0.166667h; Metallation; Stage #2: 2-bromo-1-phenyl-1-propanone In methanol at 20℃; for 0.5h; Condensation; | 79.4% |
7-chloro-3,4-dihydroquinazolin-4-one
2-bromo-4'-fluoroacetophenone
Conditions | Yield |
---|---|
Stage #1: 7-chloro-3,4-dihydroquinazolin-4-one With sodium methylate In methanol for 0.166667h; Metallation; Stage #2: 2-bromo-4'-fluoroacetophenone In methanol at 20℃; for 0.5h; Condensation; | 77.8% |
7-chloro-3,4-dihydroquinazolin-4-one
4-bromomethyltrifluoromethylbenzene
Conditions | Yield |
---|---|
Stage #1: 7-chloro-3,4-dihydroquinazolin-4-one With sodium methylate In methanol for 0.166667h; Metallation; Stage #2: 4-bromomethyltrifluoromethylbenzene In methanol at 20℃; for 0.5h; Condensation; | 76.9% |
7-chloro-3,4-dihydroquinazolin-4-one
cyclohexane
Conditions | Yield |
---|---|
With sodium azide; bis-[(trifluoroacetoxy)iodo]benzene In 2,2,2-trifluoroethanol at 20℃; for 3h; | 76% |
7-chloro-3,4-dihydroquinazolin-4-one
α-bromoacetophenone
Conditions | Yield |
---|---|
Stage #1: 7-chloro-3,4-dihydroquinazolin-4-one With sodium methylate In methanol for 0.166667h; Metallation; Stage #2: α-bromoacetophenone In methanol at 20℃; for 0.5h; Condensation; | 75% |
7-chloro-3,4-dihydroquinazolin-4-one
4-Fluorobenzyl bromide
Conditions | Yield |
---|---|
Stage #1: 7-chloro-3,4-dihydroquinazolin-4-one With sodium methylate In methanol for 0.166667h; Metallation; Stage #2: 4-Fluorobenzyl bromide In methanol at 20℃; for 0.5h; Condensation; | 74.5% |
7-chloro-3,4-dihydroquinazolin-4-one
chloroacetone
Conditions | Yield |
---|---|
Stage #1: 7-chloro-3,4-dihydroquinazolin-4-one With sodium hydride In 1-methyl-pyrrolidin-2-one at 20℃; for 0.5h; Stage #2: chloroacetone In 1-methyl-pyrrolidin-2-one at 20℃; for 0.5h; | 74% |
4-vinylpyridine
7-chloro-3,4-dihydroquinazolin-4-one
Conditions | Yield |
---|---|
With scandium tris(trifluoromethanesulfonate) In toluene at 110℃; Inert atmosphere; | 73% |
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