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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