The C-glycosidations of glycal acetates 1–4 with allyltrimethylsilane 5, vinyloxytrimethylsilane 6 or isopropenyl acetate 7 using montmorillonite K-10 as an environmentally acceptable and inexpensive industrial catalyst under mild conditions proceed effectively to give the corresponding 2,3-unsaturated C-glycosides in high yields.
甘油醛
乙酸酯1-4在温和条件下,以
蒙脱土K-10作为环境友好且经济的工业催化剂,与烯丙基三甲基
硅烷5、
乙烯氧基三甲基
硅烷6或
异丙烯基乙酸酯7进行C-糖基化反应,高效地生成了相应的2,3-不饱和C-糖苷,产率极高。