A variety of 4-methoxysalicylates and related polyketide-type phenols are regioselectively prepared by the first formal [3+3]-cyclocondensations of 1,3-bis(trimethylsilyloxy)-1,3-butadienes with 3-oxoorthoesters.
通过将1,3-双(三甲基
硅氧基)-
1,3-丁二烯与3-氧代邻酯进行第一次形式上的[3+3]环缩合反应,选择性合成了多种
4-甲氧基水杨酸酯及相关的多
酮类苯酚。