Organic synthesis in solid media. Solvent-free Horner–Wadsworth–Emmons reaction in silica gel
Abstract
Silica gel was found to be an excellent medium for the aldehyde-selective Horner-Wadsworth-Emmons reaction, which proceeds at room temperature in a short period of time under solvent-free conditions. The silica gel used for the reaction can be recovered and reused many times without losing its activity.