On the lithium dimethylcuprate induced conversion of propargylic esters into allenes using a steroidal C/D fragment derived from vitamin D3 as a stereochemical probe.
作者:Alberto Haces、Eugéne M.G.A. van Kruchten、William H. Okamura
DOI:10.1016/s0040-4039(00)87437-7
日期:——
The reactions of (CH3)2CuLi with various C-8 epimeric propargylic esters derived from Grundmann's ketone, a C/D steroid fragment originating from vitamin D3, lead to the corresponding allenes, the stereochemistry of which indicate a preferred 1,3-substitution.
(CH 3)2 CuLi与衍生自Grundmann's酮(源自维生素D 3的C / D类固醇片段)的各种C-8差向异构炔丙酸酯的反应生成相应的异戊烯,其立体化学表明优选1,3 -代换。