A mild chemospecific reductive dehalogenation of ethylaminobenzamides with lithium aluminum hydride
作者:James A. Hendrix、David W. Stefany
DOI:10.1016/s0040-4039(99)01397-0
日期:1999.9
A mild reduction of ortho-fluoro benzamides was discovered using LAH. The reaction proceeds cleanly and in moderate yields. The scope of the reaction is explored and a mechanism is proposed. A two carbon spacer between the amide and a 3° amine is optimal for this chelation controlled reaction.
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