Direct amidation of acids in a screw reactor for the continuous flow synthesis of amides

TitleDirect amidation of acids in a screw reactor for the continuous flow synthesis of amides
Publication TypeJournal Article
Year of Publication2023
AuthorsAtapalkar, RS, Kulkarni, AA
JournalChemical Communications
Volume59
Issue60
Pagination9231-9234
Date PublishedJUL
Type of ArticleArticle
ISSN1359-7345
Abstract

A simple and efficient solvent-free protocol for continuous flow synthesis of amides at room temperature is developed using easily available starting materials. N-(3-Dimethylaminopropyl)-N & PRIME;-ethylcarbodiimide hydrochloride (EDC.HCl) was used as the reagent for the formation of an amide bond without using any metal catalyst or additives. A jacketed screw reactor when operated over a residence time of 30 300 s helped achieve almost complete conversion. This approach is extended for the synthesis of 36 derivatives and 2 bioactive molecules using different substrates having different aliphatic mono and di-acids as well as aromatic acids, including aromatic hetero-acid compounds and phenyl hydrazine. The target amide was scaled up to 100 g with an average 90% yield.

DOI10.1039/d3cc02402d
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

4.9

Divison category: 
Chemical Engineering & Process Development
Database: 
Web of Science (WoS)

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