105096-76-2

Upstream product

• 56691-74-8 {[(2,6,6-trimethyl-1-cyclohexen-1-yl)methyl]sulfonyl}benzene 
• 60-29-7 diethyl ether 
• 429-41-4 tetrabutyl ammonium fluoride 
• 103905-09-5 1-acetoxy-6-bromo-3,7-dimethyl-9-(2,6,6-trimethyl-1-cyclohexene-1-yl)-9-phenylsulfonyl-2,7-nonadiene 
• 103905-01-7 1-acetoxy-8-hydroxy-3,7-dimethyl-9-(2,6,6-trimethyl-1-cyclohexen-1-yl)-9-(phenylsulfonyl)-2(E),6(E)-nonadiene 
• 37905-02-5 (2E,6E)-3,7-dimethyl-8-oxoocta-2,6-dien-1-yl acetate 
• 37905-03-6 8-hydroxygeranyl acetate 
• 105-87-3 3,7-dimethyl-2E,6-octadien-1-yl acetate 
• 103905-08-4 1-acetoxy-6-chloro-3,7-dimethyl-9-(2,6,6-trimethyl-1-cyclohexene-1-yl)-9-phenylsulfonyl-2,7-nonadiene 

Downstream Products

• 127-47-9 Retinol acetate 
• 29584-22-3 9-cis-Vitamin-A-acetat 
• 29443-87-6 11-cis-Vitamin-A-acetat 
• 34356-31-5 (7E,9E,11E,13Z)-retinyl acetate 

Relevant academic research and scientific papers

New sulfonyl compound and use of said compound in the process of producing vitamin A or its esters

The invention relates to a new sulfonyl compound having the general formula wherein R1is an unsubstituted or substituted aryl group; and R2is a C1-C20 alkyl group, a C2-C20 alkenyl group or a C2-C20 alkynyl group, which groups may be substituted with one or more substituents selected from the group consisting of C1-C4 alkoxy, halogen, unsubstituted aryl and substituted aryl; or wherein R2 is a tri(hydrocarbyl)silyl group, an optionally lower-alkyl- substituted dihydro- or tetrahydropyran-2-yl group, an optionally lower- alkyl-substitute dihydro- or tetrahydro-fur-2-yl group, or a lower alkoxyalkylgroup. This sulfonyl compound can be used as an intermediate in the process of producing vitamin A or its esters.

Process for producing vitamin A or its carboxylic acid esters, and intermediate compounds useful for the process

A process for producing vitamin A represented by the formula STR1 which comprises treating a compound represented by the formula STR2 wherein R1 represents an aryl group which may be substituted, R21 and R22 each represents a hydrogen atom or a lower alkanoyl group, R3 represents an acetal-type protective group for a hydroxyl group, and X represents a halogen atom, with a base; and novel intermediate compounds useful for the above process.