[1-(4,5,6,7-tetrahydro-4,4,7,7-tetramethylbenzo[b]thien-2-yl)ethyl]triphenylphosphonium bromide 、
5-Formyl-3-methyl-pentadien-(2.4)-saeure-(1) 、
水合甲醇 在
正己烷 、
水 、 crude product 、 silica gel 作用下,
以
四氢呋喃 为溶剂,
反应 2.0h,
以are obtained 2.4 g of ethyl 3-methyl-7-(4,5,6,7-tetrahydro-4,4,7,7-tetramethylbenzo[b]thien-2-yl)-2,4,6,-octatrienoate as a pale yellowish oil的产率得到Ethyl 3-methyl-7-(4,5,6,7-tetrahydro-4,4,7,7-tetramethylbenzo[b]thien-2-yl)-2,4,6-octatrienoate