Study on the ArI-catalyzed intramolecular <i>oxy</i>-cyclization of 2-alkenylbenzamides to benzoiminolactones
作者:Huixia Liu、Xiaojun Deng、Xie Huang、Nan Ji、Wei He
DOI:10.1039/d0ob00612b
日期:——
A metal-free synthetic method toward the preparation of benzoiminolactones through oxy-cyclization of 2-alkenylbenzamides mediated by a catalyst/oxidant (ArI/mCPBA) system was developed.
Palladium-Catalyzed Intramolecular Hydroaminocarbonylation to Lactams: Additive-Free Protocol Initiated by Palladium Hydride
作者:Yue Hu、Zhiqiang Shen、Hanmin Huang
DOI:10.1021/acscatal.6b01939
日期:2016.10.7
A palladium-catalyzed intramolecular hydroaminocarbonylation of 2-vinylbenzylamines in the absence of acidic or any other additives was realized via rational designing the catalytic system on the basis of mechanistic studies, which allows for the synthesis of a variety of six-membered lactams in good to excellent yields with high regioselectivity. The postulated palladium-hydride intermediate for initiating
A series of diversely substituted 2H-2-benzazepine-1,3-diones were efficiently prepared from the unsaturated precursors, N-acyl-o-vinylbenzamides, through a ring-closing metathesis reaction. The parent compounds were easily obtained from the appropriate o-vinylbenzoic acids.
A method for the synthesis of cyclic amides via phosphazene base-catalyzed intramolecular hydroamidation of amide alkenes was developed. The reaction using a catalytic amount of P4-base had a good functional group tolerance and a broad substrate scope and could also be used to synthesize lactam, cyclic urea, and oxazolidinone compounds. This catalytic system was expanded to a one-pot intramolecular
A variety of diversely substituted isoindeno[1,2-c]isoquinolin-5,11-diones has been readily assembled through a sequence involving a Suzuki-Miyaura cross-coupling reaction with enol phosphates combined with a ring-closing metathesis (RCM) reaction. Intramolecular carbocationic annulation reaction and ultimate oxidation of a latent hydroxyl functionality completed the synthesis of the target titled compounds. (c) 2011 Elsevier Ltd. All rights reserved.