Tf<sub>2</sub>O- and Cu(OTf)<sub>2</sub>-Assisted Acylamination Reaction of Unactivated Alcohols with Nitriles: A One-Pot P(IV) Activation, Stereoretention in Cycloalkanols and Deprotection Approach
作者:Mohammad Yaqoob Bhat、Sajjad Ahmed、Qazi Naveed Ahmed
DOI:10.1021/acs.joc.2c01251
日期:2022.9.2
Described herein is a simple, novel, one-pot acylamination reaction of unactivated alcohols. This reaction employs the combination of PCl3 and triflic anhydride (Tf2O) or copper triflate Cu(OTf)2, which serves as a source of P(IV)-activated complex for nitriles to react under the Ritter-type mechanism. The synthetic utility of Tf2O-promoted reactions was demonstrated by its effectiveness to generate different
本文描述了一种简单、新颖的未活化醇的一锅酰化反应。该反应采用PCl 3和三氟甲磺酸酐(Tf 2 O) 或三氟甲磺酸铜Cu(OTf) 2的组合,作为P(IV)活化络合物的来源,腈在Ritter型机理下反应。Tf 2 O 促进反应的合成效用通过其产生不同酰氨基化产物的有效性得到证实。通过使用Cu(OTf) 2,该方法代表了一个罕见的α-选择性酰化反应的例子。对于手性环烷醇,使用 Cu(OTf) 2- 改进的程序,形成完全保留构型的酰氨基产物。铜辅助反应在乙腈中的合成效用很容易被证明是一种温和的脱保护策略。