di-2-thienyl carbonate (2-DTC) in the presence of a catalytic amount of 4-(dimethylamino)pyridine (DMAP) proceeded smoothly to afford the corresponding esters in good-to-high yields along with 2(5H)-thiophenone. This esterification was accelerated by the addition of an equimolar amount of iodine to afford the esters in higher yields within a shorter reaction time. Further, cyclization of ω-hydroxycarboxylic
在催化量的 4-(
二甲氨基)
吡啶 (
DMAP) 存在下,使用二-2-
噻吩基
碳酸酯 (2-DTC) 将
羧酸与醇酯化反应顺利进行,得到相应的酯。与
2(5H)-噻吩酮一起产生。通过加入等摩尔量的
碘来加速该酯化,以在更短的反应时间内以更高的产率提供酯。此外,在催化量的
DMAP 存在下,ω-羟基
羧酸与等摩尔量的 2-DTC 环化,然后加入 1-4 等摩尔量的
碘,以良好到高的产率提供相应的内酯在温和的条件下。该方法成功地用于合成赤霉烯酸内酯。