Document Type and Number:
Japanese Patent JPS5320030
Kind Code:
B1
Abstract:
1353858 Sulphones for vitamin A synthesis RHONE-POULENC SA 19 Jan 1972 [20 Jan 1971] 2582/72 Headings C2C and C2V Novel compounds (I) where R is aryl and Y is H or Q being H or a hydrocarbon radical, are made by reacting vinyl-#-ionol either with RSO 2 M (M is an alkali metal) or first with a phosphorus trihalide and then reacting the corresponding halide, e.g. bromide, so obtained with RSO 2 M; the compounds (I) obtained (i.e. Y is H) react with XCH 2 C(Me) : CHCO 2 Q (X is Cl, Br or I) in the presence of base to give (I) wherein Y is -CH 2 C(Me) : CHCO 2 Q and these can be converted into vitamin A acid or esters thereof.
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Application Number:
JP672172A
Publication Date:
June 24, 1978
Filing Date:
January 18, 1972
Export Citation:
International Classes:
C07C403/22; C07C67/00; C07C317/00; C07C317/14; C07C401/00; C07C403/00; C07C403/20; B01J31/02; C07C23/10; A61K; C07C; (IPC1-7): C07C147/06; C07C147/107