(2-氯-乙氧基)-甲醇 、 乙酰化葡萄烯糖 在
triflic acid supported on silica gel 作用下,
反应 0.33h,
以77.778%的产率得到
参考文献:
名称:
CF3SO3H–SiO2 as catalyst for Ferrier rearrangement: an efficient procedure for the synthesis of pseudoglycosides
摘要:
An efficient method for the conversion of 2,4,6-tri-O-acetyl-D-glucal to 2,3-unsaturated glycosides by using triflic acid on SiO2 as catalyst has been established. A series of 2,3-unsaturated glucosides were synthesized in good yield and high anomeric selectivity under transition metal-free conditions. (c) 2012 Elsevier Ltd. All rights reserved.