Synlett 2013; 24(2): 236-240
DOI: 10.1055/s-0032-1317965
letter
© Georg Thieme Verlag Stuttgart · New York

A Simple and Efficient Method for One-Pot, Three-Component Synthesis of Terminal Vinylphosphonates Using a Task-Specific Ionic Liquid

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Publication History

Received: 13 November 2012

Accepted after revision: 11 December 2012

Publication Date:
03 January 2013 (online)


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Abstract

A convenient and practical method for the one-pot, three-component synthesis of terminal vinylphosphonates from readily available starting materials (aryl/alkyl/heteroaryl aldehydes, nitromethane and trialkylphosphites) through a tandem Henry–­Michael reaction followed by nitro elimination in the presence of 5-hydroxypentylammonium acetate (5-HPAA) as a task-specific ionic liquid, is described. This method offers several advantages such as the use of a reusable and inexpensive ionic liquid, which is an environmentally benign reaction medium, and a simple reaction setup that does not require specialized equipment. The approach offers good yields of the products under mild reaction conditions.

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