acid (TfOH) catalyzed cyclization of alkynyl‐substituted cyclic tertiary alcohols 1 under mild conditions with good control of ring size (see scheme). The method was extended to the synthesis of bridged bicyclic ketones with high stereoselectivity.
各种形状和大小的环:在温和的条件下,通过
三氟甲磺酸(TfOH)催化的炔基取代的环状叔醇1的环化反应,可以很好地获得螺
环烃2(见方案)。该方法扩展到具有高立体选择性的桥联双环酮的合成。