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
A Direct and Stereoretentive Synthesis of Amides from Cyclic Alcohols
作者:Deboprosad Mondal、Luca Bellucci、Salvatore D. Lepore
DOI:10.1002/ejoc.201101165
日期:2011.12
Chlorosulfites prepared in situ using thionyl chloride react with nitrile complexes of titanium (IV) fluoride to give a one-pot conversion of alcohols into amides. For the first time, amides are obtained from cyclic alcohols with stereoretention. Critical to the design of these new Ti(IV) reactions has been the use of little explored Ti(IV) nitrile complexes which are thought to chelate chlorosulfites