A new and concise way to enamides by fluoroalkanosulfonyl fluoride mediated Beckmann rearrangement of α,β-unsaturated ketoximes
作者:Zhaohua Yan、Yun Xu、Weisheng Tian
DOI:10.1016/j.tetlet.2014.10.154
日期:2014.12
The reaction of α,β-unsaturated ketoximes with fluoroalkanosulfonyl fluorides in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) underwent the Beckmann rearrangement smoothly to afford the corresponding acid-sensitive enamides in moderate to excellent yields, which provides a new efficient method for the preparation of acid-sensitive enamides.
在1,8-二氮杂双环[5.4.0]十一碳-7-烯(DBU)存在下,α,β-不饱和酮肟与氟代链烷磺酰氟的反应顺利进行贝克曼重排,以得到中度至中等的相应酸敏感性酰胺。优异的收率,为制备酸敏感的酰胺提供了一种新的有效方法。