Some acetonyltriphenylphosphonium, methoxycarbonylmethyltriphenylphosphonium salts and their triphenylarsonium analogues could undergo Wittig reaction with aldehyde in good yields. Their reactivity was counteranion-dependent and was arranged in the following order: p-TsO−, Br−≪CF3CO2−≪ClCH2CO2−
                                    一些
丙酮基三苯基phosph盐,甲氧基羰基甲基三苯基phosph盐及其三苯基ar类似物可以与醛进行Wittig反应,收率很高。它们的反应性是抗衡阴离子依赖性的并且被安排在顺序如下:p -TsO - ,
溴- «CF 3 CO 2 - «ClCH 2 CO 2 -