The formal [3+3] cyclocondensation of 1,3-bis(trimethylsilyloxy)buta-1,3-dienes with 1,1-bis(methoxy)trifluoromethyl-1-en-3-ones afforded functionalized 3-methoxy-5-(trifluoromethyl)phenols with very good regioselectivity.
1,3-双(三甲基
硅氧基)丁-1,3-二烯与 1,1-双(甲氧基)三
氟甲基-1-烯-3-酮的正式 [3+3] 环缩合具有非常好的区域选择性。