New practical synthesis of panomifene. The effect of 2-trifluoromethyl substituent on the stereoselectivity of dehydration of 1,1,2-triarylethanols
作者:G NEMETH
DOI:10.1016/0040-4020(96)00763-6
日期:1996.9
Highly stereoselective eliminations were achieved by acid-catalysed dehydration of 1-(4-alkoxy)-3,3,3-trifluoro-1,2-diphenylpropan-1-ols (10, 11, 15). The influence of the trifluoromethyl group on the stereochemistry of the elimination has been discussed. The observed high stereoselectivity has been applied to give a new, practical synthesis of antiestrogenic drug panomifene (1).
高立体选择性抵销通过的1-(4-烷氧基)酸催化脱水获得-3,3,3-三氟-1,2-二苯基丙-1-醇(10,11,15)。讨论了三氟甲基对消除的立体化学的影响。观察到的高立体选择性已被用于提供一种新的,实用的抗雌激素药Panomifene的合成方法(1)。