Recent advances in C-CN and C-H bond activation of green nitrile (MeCN) for organo-complexation, cyanation and cyanomethylation

Muhammad Siddique Ahmad, Indra Neel Pulidindi, Chuanlong Li

Research output: Contribution to journalReview articlepeer-review

15 Scopus citations

Abstract

The use of green and inexpensive organic nitrile (MeCN) as a cyano and cyano-methyl source for organo-complexation, cyanation, and cyanomethylation is reviewed. In recent decade, a lot of developments have been made to realize the possibility of using a green cyanide source (MeCN) for cyanation, and this CN source has been used as, for example, a slow dosage cyanide source that could solve the problem of using metal cyanides (K4[Fe(CN)6], Zn(CN)2, KCN, CuCN, NaCN), which (1) tend to cause rapid deactivation of the catalyst and (2) are notoriously toxic, producing highly toxic HCN gas in reactions. In view of these problems, here we attempted to discuss new catalyst systems to achieve the cyanation of various aromatic hydrocarbons, such as aryl halides, aryl boronic acids, aryl carboxylic acids, indoles, diazoarenes, aryl alkynes, aryl sulfonamides, and directing group substituted arenes, under variety of reaction parameters. Moreover, acetonitrile is used as the carbon pro-nucleophile in C-C bond formation, which involves complications usually associated with the catalyst active mode or its resting state. This review demonstrates a set of innovations for practical usage via direct complexation, cyanation and cyanomethylation methodologies.

Original languageEnglish
Pages (from-to)17177-17197
Number of pages21
JournalNew Journal of Chemistry
Volume44
Issue number40
DOIs
StatePublished - 28 Oct 2020
Externally publishedYes

Bibliographical note

Publisher Copyright:
© The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.

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