作者:Jakub Častulı́k、Ctibor Mazal
DOI:10.1016/s0040-4039(00)00252-5
日期:2000.4
Cross-coupling reactions of (E)- and (Z)-tosylates of α-hydroxymethylene-γ-butyrolactone with aryl, heteroaryl, alkyl, and alkynylzinc chlorides under Pd(PPh3)4 catalysis were found to be a suitable synthetic method for stereoselective preparation of α-alkylidene- and substituted alkylidene-γ-lactones. The reactions, conducted under mild conditions, proceed with high stereoselectivity and moderate yields.
发现在Pd(PPh 3)4催化下,α-羟基亚甲基-γ-丁内酯的(E)-和(Z)-甲苯磺酸酯与芳基,杂芳基,烷基和炔基氯化锌的交叉偶联反应是一种合适的合成方法立体选择性制备α-亚烷基-和取代的亚烷基-γ-内酯。在温和条件下进行的反应以高立体选择性和中等产率进行。