As a leading manufacturer and supplier of chemicals in China, DayangChem not only supply popular chemicals, but also DayangChem's R&D center offer custom synthesis services. DayangChem can provide different quantities of custom synthesis ch
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inquiryhebei yanxi chemical co., LTD who registered capital of 10 million yuan, nearly to $2 million, we have a pharmaceutical raw materials factory production of pharmaceutical raw materials, and a reagent r&d center, and we do research and developm
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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 the dissolution ♦ We will test each batch to ensure quality ♦ OEM and private brand services designed for free ♦ Various cap colors available &diam
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inquiry1.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
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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
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Cas:638-37-9
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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
Zibo 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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inquiryCAS Number: 638-37-9 Molecular formula: C4H6O2 Molecular Weight: 86.09 EINECS number: 211-333-8 Related categories: Mol file: 638-37-9.mol Butylene dialdehyde Succinic dialdehyde
Cas:638-37-9
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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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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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inquiryZhenyu biotech exported this product to many countries and regions at best price. if you are looking for the material's manufacturer or supplier in china, zhenyu biotech is your best choice. pls contact with us freely for getting detailed
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inquiryShandong 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
Cas:638-37-9
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Type:Lab/Research institutions
inquiry1.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
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inquiryAppearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea
GOLDEN PHARMA CO.,LIMITED.is a professional pharmaceutical company,our team have more than 20years expereince in pharmaceutical production and sales. we are a professional technical enterprise specializing in the R & D, production,QA regulation
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
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inquiry1, 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
Lower 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
R & D enterprises have their own stock in stock Package:1kg Application:pharmaceutical intermediates
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
1,5-dicyclooctadiene
butanedial
Conditions | Yield |
---|---|
Stage #1: cyclo-octa-1,5-diene With ozone In ethanol; dichloromethane at -78℃; Stage #2: With triphenylphosphine In ethanol; dichloromethane at -78 - 20℃; | 98% |
Stage #1: cyclo-octa-1,5-diene With oxygen; ozone In dichloromethane at -78℃; Stage #2: With triphenylphosphine In dichloromethane at -78 - 20℃; | 98% |
Stage #1: cyclo-octa-1,5-diene With ozone In dichloromethane at -78℃; Stage #2: With triphenylphosphine In dichloromethane at -78 - 20℃; Inert atmosphere; |
Conditions | Yield |
---|---|
With thexylbromoborane dimethyl sulfide complex In carbon disulfide; dichloromethane at -20 - 20℃; for 1h; | 93% |
Conditions | Yield |
---|---|
With 1-methyl-1H-imidazole; [2,2]bipyridinyl; tetrakis(acetonitrile)copper(I) trifluoromethanesulfonate; 9-azabicyclo<3.3.1>nonane-N-oxyl In acetonitrile at 22℃; for 2h; | A 92% B 8% |
cyclohexane
percarbonate de O,O-t-butyle et O-vinyle
A
3-oxobutyraldehyde
B
butanedial
C
cyclohexylcyclohexane
D
cyclohexylacetaldehyde
E
acetone
F
tert-butyl alcohol
Conditions | Yield |
---|---|
at 140℃; for 3.5h; Product distribution; Mechanism; sealed tube; | A 7% B 4% C n/a D 25% E 5% F 90% |
Conditions | Yield |
---|---|
With sodium hypochlorite; 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical In dichloromethane; water at 0 - 10℃; for 1h; | 88.6% |
With pivaloyl chloride; dimethyl sulfoxide; triethylamine In dichloromethane at -78 - 20℃; for 1h; | 86% |
With oxalyl dichloride; dimethyl sulfoxide; triethylamine In dichloromethane at -10 - 0℃; for 2.5h; | |
With 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; [bis(acetoxy)iodo]benzene In dichloromethane at 35℃; for 0.075h; Flow reactor; chemoselective reaction; | 91 %Chromat. |
Conditions | Yield |
---|---|
With hydrogenchloride; water at 20℃; for 0.25h; | 87% |
With hydrogenchloride In water at 90℃; for 1h; | 77% |
With hydrogenchloride; water; sodium carbonate for 10h; | 70% |
Conditions | Yield |
---|---|
With acetic acid In water for 1h; | 85% |
butanedial
Conditions | Yield |
---|---|
With acetic acid In water for 1h; | 82% |
butanedial
Conditions | Yield |
---|---|
With acetic acid In water for 1h; | 82% |
Isopropylbenzene
percarbonate de O,O-t-butyle et O-vinyle
A
3-oxobutyraldehyde
B
butanedial
C
dicumene
D
acetaldehyde
E
acetone
F
tert-butyl alcohol
Conditions | Yield |
---|---|
at 140℃; for 3.5h; Product distribution; Mechanism; sealed tube; | A 15% B 10% C n/a D n/a E 25% F 69% |
Isopropylbenzene
percarbonate de O,O-t-butyle et O-vinyle
A
3-oxobutyraldehyde
B
butanedial
C
acetone
D
tert-butyl alcohol
Conditions | Yield |
---|---|
at 140℃; for 3.5h; sealed tube; | A 15% B 10% C 25% D 69% |
Conditions | Yield |
---|---|
Stage #1: cis,trans-2,5-dimethoxytetrahydrofuran In water at 75℃; for 4h; Stage #2: methanol In water at 115℃; | 69% |
Conditions | Yield |
---|---|
With sulfuric acid In water Reflux; Inert atmosphere; | 56% |
With hydrogenchloride | |
With hydrogenchloride |
2,3-dioxabicyclo<2.2.2>octane
A
ethene
B
butanedial
C
1,4-Cyclohexanedione
Conditions | Yield |
---|---|
at 450℃; under 0.001 Torr; Product distribution; Mechanism; | A n/a B 56% C 42% |
Conditions | Yield |
---|---|
at 450℃; | A 56% B 42% |
2,3-dioxabicyclo<2.2.2>octane
A
ethene
B
butanedial
C
cis-1,4-cyclohexanediol
D
4-hydroxycyclohexanone
Conditions | Yield |
---|---|
With tris(triphenylphosphine)ruthenium(II) chloride In dichloromethane at 50℃; for 2h; Product distribution; ruthenium(II) catalyzed reaction of 1,4-endoperoxide; | A 43% B 19% C 17% D 11% |
With tris(triphenylphosphine)ruthenium(II) chloride In dichloromethane at 50℃; for 2h; Title compound not separated from byproducts; | A 43 % Chromat. B 19 % Spectr. C 17 % Chromat. D 11 % Chromat. |
Conditions | Yield |
---|---|
With hydrogenchloride In tetrahydrofuran Ambient temperature; | A 38% B n/a |
Conditions | Yield |
---|---|
With ozone In dichloromethane at -78℃; | A 8% B 25% C 15% D 30% |
2,3-dioxabicyclo<2.2.2>octane
A
butanedial
B
cis-1,4-cyclohexanediol
C
4-hydroxycyclohexanone
D
1,4-Cyclohexanedione
Conditions | Yield |
---|---|
With cobalt(II) 5,10,15,20-tetraphenylporphyrin In chloroform at 60℃; for 11h; Further byproducts given; | A 21% B 28% C 17% D 5% |
Conditions | Yield |
---|---|
With ozone In dichloromethane at -78℃; | A 8% B 27% C 25% D 14% |
Conditions | Yield |
---|---|
With oxygen; silver at 350℃; | |
With oxygen; copper at 350℃; |
Conditions | Yield |
---|---|
With hydrogen; copper at 250℃; |
Conditions | Yield |
---|---|
With cis-nitrous acid | |
With water unter Kuehlung mit den nitrosen Gasen, die man aus Arsenik und Salpetersaeure; | |
With water ueber mehrere Stufen; |
Conditions | Yield |
---|---|
With mineral acid |
2,5-dihydroxyadipic acid
butanedial
Conditions | Yield |
---|---|
With water; dihydrogen peroxide; iron(II) sulfate |
N,N'-dimethyl-N,N'-diphenylsuccinamide
butanedial
Conditions | Yield |
---|---|
With tetrahydrofuran; lithium aluminium tetrahydride |
1,2-bis-(1,3-diphenyl-imidazolidin-2-yl)-ethane
butanedial
Conditions | Yield |
---|---|
With hydrogenchloride |
Conditions | Yield |
---|---|
With sodium; toluene anschliessend Behandeln mit wss.Oxalsaeure; |
3,5,3',5'-tetramethyl-1H,1'H-1,1'-succinyl-bis-pyrazole
butanedial
Conditions | Yield |
---|---|
With lithium aluminium tetrahydride |
Conditions | Yield |
---|---|
Stage #1: 2-bromoprop-1-ene With magnesium In tetrahydrofuran at 40℃; for 2h; Inert atmosphere; Stage #2: butanedial In tetrahydrofuran at 20℃; for 2h; Inert atmosphere; | 100% |
(i) Mg, (ii) /BRN= 1735656/; Multistep reaction; |
Conditions | Yield |
---|---|
With ionic liquid-supported SiO2*CF3SO3(1-) In ethanol at 20℃; for 0.166667h; Paal-Knorr Furan Synthesis; Green chemistry; | 98% |
With calcium(II) nitrate tetrahydrate In neat (no solvent) Reflux; |
Conditions | Yield |
---|---|
With potassium hydroxide; iron pentacarbonyl; carbon monoxide In ethanol; water for 5h; Ambient temperature; | 96% |
1,2,3-Benzotriazole
butanedial
(7aR,10R,12S)-10-(1H-benzotriazol-1-yl)-7a,8,9,10-tetrahydro-12-phenyl-12H-naphtho[1,2-e]pyrrolo[2,1-b][1,3]oxazine
Conditions | Yield |
---|---|
In dichloromethane at -5 - 0℃; for 5h; | 93% |
In dichloromethane; water at 0℃; for 4h; | 93% |
Conditions | Yield |
---|---|
With L-proline In 1,2-dichloro-ethane at 20℃; Inert atmosphere; | 93% |
butanedial
5-Bromo-2,2-dimethyl-1-(tetrahydropyranyloxy)-pentane
1,14-bis(tetrahydropyran-2-yloxy)-2,2,13,13-tetramethyltetradecan-6,9-diol
Conditions | Yield |
---|---|
Stage #1: 5-Bromo-2,2-dimethyl-1-(tetrahydropyranyloxy)-pentane With magnesium In tetrahydrofuran for 2h; Heating; Stage #2: butanedial In tetrahydrofuran at 20℃; | 92% |
Stage #1: 5-Bromo-2,2-dimethyl-1-(tetrahydropyranyloxy)-pentane With magnesium In tetrahydrofuran for 2h; Heating / reflux; Stage #2: butanedial In tetrahydrofuran at 0 - 20℃; Stage #3: With hydrogenchloride In tetrahydrofuran; water pH=1 - 2; | 92% |
Conditions | Yield |
---|---|
With indium In water at 60℃; under 1241.19 - 2585.81 Torr; for 0.00416667h; Microwave irradiation; Green chemistry; chemoselective reaction; | 92% |
Conditions | Yield |
---|---|
With tin; acetic acid In methanol | 91% |
Conditions | Yield |
---|---|
With ytterbium(III) triflate In ethanol at 20℃; for 3h; Paal-Knorr Furan Synthesis; | 91% |
butanedial
(tert-Butoxycarbonylmethylene)triphenylphosphorane
(2E,6E)-octa-2,6-diendioic acid di-tert-butyl diester
Conditions | Yield |
---|---|
In dichloromethane at 20℃; Wittig reaction; Inert atmosphere; | 90% |
butanedial
methyl (triphenylphosphoranylidene)acetate
A
(2Z,6Z)-octa-2,6-dienedioic acid dimethyl ester
B
dimethyl (E,E)-octa-2,6-diendioate
Conditions | Yield |
---|---|
In dichloromethane at 20℃; Wittig reaction; Inert atmosphere; | A n/a B 90% |
Conditions | Yield |
---|---|
With ytterbium(III) triflate In ethanol at 20℃; for 5h; Paal-Knorr Furan Synthesis; | 90% |
Conditions | Yield |
---|---|
With ytterbium(III) triflate In ethanol at 20℃; for 2h; Paal-Knorr Furan Synthesis; | 90% |
butanedial
4-aminobenzonitrile hydrochloride
1-(2-chloro-5-pyridylmethyl)-2-nitromethyleneimidazolidine
Conditions | Yield |
---|---|
In acetonitrile at 0℃; for 1.5h; | 89.4% |
Conditions | Yield |
---|---|
With sodium hydroxide In ethanol at -5 - 45℃; for 14h; Temperature; Reagent/catalyst; Inert atmosphere; | 89.3% |
butanedial
phenyllithium
A
1,4-diphenyl-1,4-butanediol
B
5-phenyloxolan-2-ol
Conditions | Yield |
---|---|
In tetrahydrofuran; diethyl ether; cyclohexane at -40℃; Temperature; | A 7% B 88% |
Conditions | Yield |
---|---|
With ytterbium(III) triflate In ethanol at 20℃; for 4h; Paal-Knorr Furan Synthesis; | 88% |
Conditions | Yield |
---|---|
With ytterbium(III) triflate In ethanol at 20℃; for 7h; Paal-Knorr Furan Synthesis; | 88% |
Conditions | Yield |
---|---|
With ytterbium(III) triflate In ethanol at 20℃; for 4h; Paal-Knorr Furan Synthesis; | 88% |
Conditions | Yield |
---|---|
With potassium hydroxide; iron pentacarbonyl; carbon monoxide In ethanol; water for 12h; Ambient temperature; | 87% |
butanedial
ethyl (triphenylphosphoranylidene)acetate
ethyl (2E)-6-oxohex-2-enoate
Conditions | Yield |
---|---|
In dichloromethane for 24h; | 87% |
In dichloromethane for 48h; | 58% |
In dichloromethane at 0℃; for 48h; | 58% |
In dichloromethane at 20℃; for 48h; | 6.3 g |
Conditions | Yield |
---|---|
With N-methylcyclohexylamine; water In N,N-dimethyl-formamide at 140℃; for 5h; | 86% |
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