申请人:Hoffmann-La Roche Inc.
公开号:US03960967A1
公开(公告)日:1976-06-01
A process for the preparation of vitamin A and esters thereof from the condensation of a sulfone of 2-methyl-4-hydroxy-but-2-ene and an activated derivative of 3-methyl-5-(2,6,6-trimethyl-cyclohexen-1-yl)penta-2,4-diene including intermediates therein.
一种从2-甲基-4-羟基-丁-2-烯的磺酮和3-甲基-5-(2,6,6-三甲基-环己烯-1-基)戊-2,4-二烯的活化衍生物的缩合反应中制备维生素A及其酯的方法,包括其中间体。