Sulfated tungstate: A highly efficient, recyclable and ecofriendly catalyst for chemoselective <i>N</i>-tert butyloxycarbonylation of amines under the solvent-free conditions
作者:Ajit P. Ingale、Sandeep V. Shinde、Nitin M. Thorat
DOI:10.1080/00397911.2021.1942060
日期:2021.8.18
Abstract Sulfated tungstate catalyzed an efficient and ecofriendly protocol has been described for the chemoselective N-tert-butyloxycarbonylation of amines under the solvent-free conditions at room temperature. The variety of functionalized aliphatic, aromatic and heteroaromatic amines efficiently undergoes the N-tert-butyloxycarbonylation under the developed protocol. The aminoalcohol, aminophenol
摘要 硫酸化钨酸盐催化了一种高效且环保的方案,用于在室温下无溶剂条件下对胺进行化学选择性N-叔丁氧基羰基化。在开发的协议下,各种功能化的脂肪族、芳香族和杂芳香族胺有效地进行了N-叔丁氧基羰基化。氨基醇、氨基酚、氨基酯以及各种手性胺都经过化学选择性的N-优化反应条件下的Boc保护。该方案的优点是反应速度快、条件温和、官能团耐受性好、收率高、无溶剂、产品易回收、催化剂可回收性好。这使得该协议可行、经济且环境友好。