[3 + 2] Cycloaddition of Nitrile Imines with Enamides: An Approach to Functionalized Pyrazolines and Pyrazoles
作者:Liang Tu、Limei Gao、Xiaomeng Wang、Ruijie Shi、Rupei Ma、Junfei Li、Xiaoshuang Lan、Yongsheng Zheng、Jikai Liu
DOI:10.1021/acs.joc.0c02244
日期:2021.1.1
with enamides has been established. A wide range of functionalized pyrazoline derivatives (53 examples) were obtained in moderate to good yields (up to 96%) under very mild conditions. This protocol features broad substrate scope, good functional group tolerance, and operational simplicity. Practical transformation of the products into useful pyrazoles via a one-pot process and the scalability of this
已经建立了一种有效的[3 + 2]与酰胺共生的腈亚胺环加成反应。在非常温和的条件下,以中等至良好的收率(高达96%)获得了多种官能化的吡唑啉衍生物(53个实例)。该协议具有广泛的底物范围,良好的官能团耐受性和操作简便性。通过一锅法将产品实际转化为有用的吡唑,并且该协议的可扩展性突出了此合成方法的实用性。