The role of proton shuttling mechanisms in solvent-free and catalyst-free acetalization reactions of imines
作者:Victor J. Lillo、Javier Mansilla、José M. Saá
DOI:10.1039/c8ob01007b
日期:——
so in addition reactions of the type NuH + E → Nu–EH taking place under solvent-free and catalyst-free conditions. Herein we show that the addition of alcohols or amines (the NuH component) to imine derivatives (the E component), in 1 : 1 ratio, under solvent-free and catalyst-free conditions, are efficient methods to access N,O and N,N-acetal derivatives. In addition, computational studies reveal that
质子转移对于理解化学过程至关重要。此外,NuH + E→Nu–EH类型的其他反应在无溶剂和无催化剂的条件下进行。在本文中,我们表明在无溶剂和无催化剂条件下,以1:1的比例向亚胺衍生物(E组分)中添加醇或胺(NuH组分)是获取N,O和N的有效方法,N-缩醛衍生物。此外,计算研究表明它们是催化反应,涉及两个或什至三个以协同方式与氢键结合的NuH⋯(NuH)n起作用的NuH分子。uNuH通过协调的质子穿梭机制(添加醇)或逐步的质子穿梭机制(添加胺)处于过渡状态(许多身体效应),从而促进了关键的质子转移步骤。