2E,4E α,β:γ,δ dienones and dienoates were prepared in good to excellent yields by the condensation of unsaturated aldehydes with ketone and ester lithium enolates in the presence of trimethylchlorosilane. Application of this process to cis olefinic aldehydes provides a new route to 2E,4Z-dienones.
在三
甲基氯硅烷存在下,通过不饱和醛与酮和酯化烯醇
锂缩合反应,可以很好地制备2E,4Eα,β:γ,δ二烯酮和二烯酸酯。该方法对顺式烯烃醛的应用为2E,4Z-二
壬烯的开发提供了一条新途径。