Multicomponent reactions involving phosphines, arynes and aldehydes
作者:Anup Bhunia、Trinadh Kaicharla、Digvijay Porwal、Rajesh G. Gonnade、Akkattu T. Biju
DOI:10.1039/c4cc05420b
日期:——
heterocycles, the reactions in which phosphines are incorporated into the final product are rare, and the reports on phosphine addition to highly electrophilic arynes are scarce. Herein, we report the phosphine triggered multicomponentreaction of arynes and aldehydes, which takes place via the formal [3+2] cycloaddition of an initially generated 1,3-phosphonium zwitterion from phosphines and arynes with aldehydes
Reactions of bicycloalkenyldiiodonium salts with nucleophiles
作者:Peter J. Stang、Andreas Schwarz、Thorsten Blume、Viktor V. Zhdankin
DOI:10.1016/s0040-4039(00)61769-0
日期:1992.11
Alkenyldiiodonium salts 1 react with a number of anionic nucleophiles to give the corresponding products of the vinylic nucleophilic substitution of the iodobenzene moiety. However, analogous reaction with Ph3P leads to the formation of tetraphenylphosphonium salt and diiodoalkene.
Palladium-Catalyzed Synthesis of Functionalized Tetraarylphosphonium Salts
作者:David Marcoux、André B. Charette
DOI:10.1021/jo702355c
日期:2008.1.1
An efficient method to synthesize functionalized tetraarylphosphoniumsalts is described. This palladium-catalyzed coupling reaction between aryl iodides, bromides, or triflates and triphenylphosphine generates phosphonium salts in high yields. The coupling is compatible with a variety of functional groups such as alcohols, ketones, aldehydes, phenols, and amides.
Catalyst‐Free Arylation of Tertiary Phosphines with Diaryliodonium Salts Enabled by Visible Light
作者:Dmitry I. Bugaenko、Alexey A. Volkov、Mikhail V. Livantsov、Marina A. Yurovskaya、Alexander V. Karchava
DOI:10.1002/chem.201902955
日期:2019.9.25
The visible-light-induced arylation of tertiaryphosphines with aryl(mesityl)iodonium triflates to produce the quaternary phosphonium salts occurs under mild, metal, and catalyst-free conditions. Photo-excited EDA complexes between diaryliodonium salts and phosphines supposedly enable this transformation, which is difficult to achieve through the traditional ground-state reactions. Demonstrating high
Rapid Synthesis of Zwitterionic Phosphonium Benzoates by a Three‐Component Coupling Involving Phosphines, Arynes and CO
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作者:Subrata Bhattacharjee、Anjali Raju、Rahul N. Gaykar、Rajesh G. Gonnade、Tony Roy、Akkattu T. Biju
DOI:10.1002/asia.202000610
日期:2020.7.16
A mild and easy to perform multicomponent coupling involving phosphines, arynes generated from 2‐(trimethylsilyl)aryl triflates, and CO2 allowing the transition‐metal‐freesynthesis of zwitterionic phosphonium benzoates has been developed. The reaction proceeds via the generation of 1 : 1 zwitterionic intermediates from phosphines and arynes followed by the interception with CO2 to deliver the carboxylates