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Medicinal Chemistry

Editor-in-Chief

ISSN (Print): 1573-4064
ISSN (Online): 1875-6638

Research Article

A Microwave-Promoted/Assisted Method for Rapid Preparation of Biaryl Seven-membered Lactones

Author(s): Chunqi Hu, Jun Li and Wenting Du

Volume 13, Issue 3, 2017

Page: [301 - 305] Pages: 5

DOI: 10.2174/1573406413666161117121441

Price: $65

Abstract

Background: Biaryl seven-membered lactones (BSLs), the target compounds are a class of bioactive compounds with anti-arrhythmic activity, which also serve as a starting material or structural units for chemical synthesis.

Objective: To report a simple and efficient procedure for the synthesis of biaryl seven-membered lactones.

Method: Under microwave, the umpolung reaction was promoted by N-heterocyclic carbenes under oxygen, with anhydrous potassium carbonate as base and with 1,4,7,10,13,16-Hexanoxacyclooctadecane (18-crown-6) as a phase-transfer catalyst.

Results: The practical protocol was found to be compatible with different structurally diverse substrates and with moderate to excellent yields.

Conclusion: This synthesis method has the advantage of high efficacy and novelty, short reaction time, operation simplicity, mild condition and high yields, providing a useful and atom-economic approach to the synthesis of BSLs.

Keywords: BSLs, carbene salt, lactones, N-heterocyclic carbine, microwave, umpolung reaction.

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