A New Two-Step Four-Component Synthesis of Highly Functionalized Cyclohexenols by Sequential Nickel-Catalyzed Couplings
作者:Mario Lozanov、John Montgomery
DOI:10.1021/ja0175845
日期:2002.3.1
A new two-step procedure for the synthesis of cyclohexenols has been developed. A nickel-catalyzedthree-componentaddition of an enal, alkyne, and acetylenic tin affords substituted hept-4-en-6-ynals. The products of this first step then undergo a second nickel-catalyzedreaction with organozincs or organoboranes to afford densely functionalized cyclohexenols. Variation in each of the four components