Wittig reactions in water media employing stabilized ylides with aldehydes. Synthesis of α, β-unsaturated esters from mixing aldehydes, α-bromoesters, and Ph3P in …
A El-Batta, C Jiang, W Zhao, R Anness…
Index: El-Batta, Amer; Jiang, Changchun; Zhao, Wen; Anness, Robert; Cooksy, Andrew L.; Bergdahl, Mikael Journal of Organic Chemistry, 2007 , vol. 72, # 14 p. 5244 - 5259
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Citation Number: 138
Abstract
Water is demonstrated to be an effective medium for the Wittig reaction over a wide range of stabilized ylides and aldehydes. Despite sometimes poor solubility of the reactants, good chemical yields normally ranging from 80 to 98% and high E-selectivities (up to 99%) are achieved, and the rate of the reactions in water is unexpectedly accelerated. The efficiency of water as a medium in the Wittig reaction is compared to conventional organic solvents ...
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