Succinimide-Promoted Malonylamination of Alkenes with Amines and Iodonium Ylides via Trapping of Transient Aminium Radical Cations
作者:Liang Zhang、Xiangjin Kong、Shuya Liu、Zhiguo Zhao、Qun Yu、Wei Wang、Yao Wang
DOI:10.1021/acs.orglett.9b00983
日期:2019.4.19
A conceptually distinct strategy enabling malonylamination of alkenes with abundant amines and iodonium ylides without assistance of any transition metal was developed. Succinimide was identified as a proton shuttle that can not only largely accelerate the process of trapping highly unstable radical ion pairs with alkenes but also significantly improve the chemical yields.
General Method for the Synthesis of Phenyliodonium Ylides from Malonate Esters: Easy Access to 1,1-Cyclopropane Diesters
作者:Sébastien R. Goudreau、David Marcoux、André B. Charette
DOI:10.1021/jo802208q
日期:2009.1.2
A general method to access phenyliodonium ylides from malonates has been developed. These ylides provide easy access to a variety of useful 1,1-cyclopropane diesters using rhodium or copper catalysis. Moreover, the iodonium ylide of dimethyl malonate was obtained in 78% yield using improved conditions that involve a simple filtration step to isolate the desired product. This ylide was shown to be a
Iodonium Ylides Enable the Direct Installation of Hydroxylamines and Oximes into a Broad Range of Alkenes
作者:Liang Zhang、Zhiguo Zhao、Wei Wang、Shuya Liu、Yao Wang
DOI:10.1021/acs.orglett.9b03534
日期:2019.11.15
Described herein is an unprecedented method that enables the installation of hydroxylamines and oximes into a broad range of alkenes with iodonium ylides. For the first time, the single electron transfer process between iodonium ylides and oxygen-based Lewis bases was demonstrated in this transformation.
Direct Cyclization of Tertiary Aryl Amines with Iodonium Ylides
作者:Zhiguo Zhao、Yongrui Luo、Shuya Liu、Liang Zhang、Lei Feng、Yao Wang
DOI:10.1002/anie.201800389
日期:2018.3.26
Described herein is a direct cyclization of simple tertiary aryl amines with iodonium ylides leading to a broad range of N‐heterocycles. Completely different from the known reactivity of iodonium ylides, the finding reported herein is that an iodonium ylide is capable of cleaving a C(sp3)−H bond and accepting two hydrogen atoms of a tertiary aryl amine, thus inducing a novel cyclization process. This
Highly Stereoselective Synthesis of Multisubstituted Olefins from Alkynyl Tetracoordinate Borons and Iodonium Ylides via a Cyclic Intermediate
作者:Jinchao Liang、Xin Chen、Jinglong Chen、Xingxing Ma、Qiuling Song
DOI:10.1021/acs.orglett.4c01031
日期:2024.5.10
developed a general method for the construction of deuterated trisubstitutedalkenes from a cheap deuteration source, D2O, and the corresponding deuterated trisubstitutedalkenes were obtained with excellent deuteration rates. This transformation features a novel reaction mechanism, exclusive stereoselectivity, and deuterated trisubstitutedalkenes with excellent deuteration ratios.