38987-92-7

Basic information

• Product Name: Cyclohexene, 2-(5-bromo-3-methyl-1,3-pentadienyl)-1,3,3-trimethyl-, (E,E)-
• CAS NO: 38987-92-7
• Molecular Formula: C15H23Br
• Molecular Weight: 283.252
• Mol File: 38987-92-7.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: Cyclohexene, 2-(5-bromo-3-methyl-1,3-pentadienyl)-1,3,3-trimethyl-, (E,E)-(CAS DataBase Reference)
• NIST Chemistry Reference: Cyclohexene, 2-(5-bromo-3-methyl-1,3-pentadienyl)-1,3,3-trimethyl-, (E,E)-(38987-92-7)
• EPA Substance Registry System: Cyclohexene, 2-(5-bromo-3-methyl-1,3-pentadienyl)-1,3,3-trimethyl-, (E,E)-(38987-92-7)

Safety Data

• Hazardous Substances Data: 38987-92-7(Hazardous Substances Data)

Upstream product

• 78-70-6 3,7-dimethylocta-1,6-dien-3-ol 
• 24529-80-4 (E)-1-O-acetyl-4-chloro-3-methyl-2-buten-1-ol 
• 32659-14-6 4-bromo-3-methyl-2-buten-1-ol acetate 
• 3917-38-2 3-methyl-5-acetoxy-1-(2,6,6-trimethyl-1-cyclohexen-1-yl)-1,3-pentadiene 
• 59633-88-4 2-(bromomethyl)-1,3,3-trimethylcyclohex-1-ene 
• 59057-30-6 (1E)-1-(2,6,6-trimethylcyclohex-1-enyl)-3-methyl-1,4-pentadien-3-ol 

Downstream Products

• 62285-98-7 5-(2,6,6-trimethylcyclohexenyl)-3-methyl-2,4-pentadienyltriphenylphosphonium bromide 
• 127-47-9 Retinol acetate 
• 79-81-2 retinyl palmitate 
• 38987-90-5 5-Benzolsulfonyl-3,7-dimethyl-9-(2',6',6'-trimethylcyclohex-1-enyl)-nona-2,6,8-triensaeureethylester 
• 41551-56-8 5-Benzolsulfonyl-3,7-dimethyl-9-(2',6',6'-trimethylcyclohex-1-enyl)-nona-2,6,8-triensaeuremethylester 
• 339-16-2 all-trans-methyl retinoate 
• 38987-91-6 5-(2,6,6-trimethyl-cyclohex-1-enyl)-3-methyl-1-phenyl-sulphonyl-penta-2,4-diene 
• 59830-44-3 (2E,6E,8E)-3,7-Dimethyl-4-(toluene-4-sulfonyl)-9-(2,6,6-trimethyl-cyclohex-1-enyl)-nona-2,6,8-trien-1-ol 

Relevant articles and documents

Preparation method of vitamin A acetate intermediate C15 and vitamin A acetate

The invention provides a preparation method of a vitamin A acetate intermediate C15 and vitamin A acetate. The method comprises the following steps: taking 1-halogenated-2-methyl-4-acetoxy-2-butene asa raw material, preparing a corresponding Wittig reagent through a substitution reaction with triphenylphosphine or triester phosphite, then carrying out a Wittig reaction with beta-cyclocitral, hydrolyzing an ester group under an alkaline condition, acidifying to obtain a corresponding halide, and carrying out a substitution reaction with triphenylphosphine or triester phosphite again to prepareC15. The vitamin A acetate can be prepared by carrying out a Wittig reaction on the obtained C15 and 2-methyl-4-acetoxy-2-butenal under an alkaline condition. The method has the advantages of singlereaction type, easy operation and realization of reaction conditions, safe and environment-friendly operation, simple post-treatment and low cost; and the reaction activity is strong, the reaction selectivity is high, the atom economy is high, and the target product yield and purity are high.

Vitamin A synthesis by sulfone alkylation elimination. C15 halide, C5 hydroxy sulfone approach

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