New ketone homoenolate anion equivalents derived from (alkenyl)pentamethyl phosphoric triamides
作者:Claude Grison、Antoine Thomas、Frédéric Coutrot、Philippe Coutrot
DOI:10.1016/s0040-4020(03)00188-1
日期:2003.3
Lithiated ambident anions derived from (1-alkyl-2-propenyl)- or (1-phenyl-2-propenyl)-pentamethyl phosphoric triamides undergo regioselectively γ-reaction with various alkylating reagents and isobutyraldehyde. Further hydrolysis of adducts releases the ketone under acid conditions. Number of synthetic applications clearly show the ketone homoenolate behaviour of these new carbanions.
衍生自(1-烷基-2-丙烯基)-或(1-苯基-2-丙烯基)-五甲基磷酸三酰胺的锂化环境阴离子与各种烷基化试剂和异丁醛进行区域选择性的γ反应。加合物的进一步水解在酸性条件下释放出酮。合成应用的数量清楚地表明了这些新碳负离子的酮均烯酸酯行为。