It′s a cinch! The title reaction with azomethineimines 1 uses an operationally simple procedure, based on the combination of the bromide salt of cinchona alkaloids (3) and KOH. The procedure is reliable and general. Trifluoromethyl‐substituted amines can be accessed by a two‐step deprotection of the product (S)‐2.
Rhodium(III)-Catalyzed Oxidative CH Functionalization of Azomethine Ylides
作者:Wencui Zhen、Fen Wang、Miao Zhao、Zhengyin Du、Xingwei Li
DOI:10.1002/anie.201207204
日期:2012.11.19
Put it on a ring: A rhodium(III) complex can catalyze the oxidative coupling of azomethine imines with olefins, leading to the synthesis of 1,2‐dihydrophthalazines, olefinated aldehydes, or fused pyridines, depending on the conditions used.
Rh(III)-Catalyzed Mild Coupling of Nitrones and Azomethine Imines with Alkylidenecyclopropanes via C–H Activation: Facile Access to Bridged Cycles
作者:Dachang Bai、Teng Xu、Chaorui Ma、Xin Zheng、Bingxian Liu、Fang Xie、Xingwei Li
DOI:10.1021/acscatal.8b00746
日期:2018.5.4
activation of nitrones and azomethine imines in the context of dipolar addition with alkylidenecyclopropanes (ACPs) have been realized. By taking advantage of the ring strain in ACPs, the reaction with aryl nitrones delivered bridged [3.2.1] bicyclicisoxazolidines, and reaction with azomethine imines afforded bridged tricyclic pyrazolones under the same conditions, where both the nitrone and azomethine
Rhodium(III)-Catalyzed Annulation of Azomethine Ylides with Alkynes<i>via</i>CH Activation
作者:Yuye Chen、Fen Wang、Wencui Zhen、Xingwei Li
DOI:10.1002/adsc.201200924
日期:2013.2.1
The rhodium(III)-catalyzed coupling of azomethineylides with alkynes via CH activation has been developed for the synthesis of indenamines in moderate to high yields. The coupled products can be further oxidized to indenones and derivatives.
Synthesis of Indenopyrazole Frameworks via Cascade C–H Functionalization/[3 + 2] Dipolar Cycloaddition/Aromatization Rearrangement Reactions
作者:Min Wu、Ruiqi Wang、Fangyuan Chen、Weijie Chen、Zhi Zhou、Wei Yi
DOI:10.1021/acs.orglett.0c02506
日期:2020.9.18
redox-neutral Ir(III)- or Ru(II)-catalyzed C–H couplings of azomethine imines with α,α-difluoromethylene alkynes have been realized, leading to the efficient synthesis of indenopyrazole frameworks via a tandem C–H functionalization/[3 + 2] dipolar cycloaddition/ring-opening aromatization rearrangement process, in which the generated fluoroallene species was involved as the dipolarophile via a selective