A Practical Route to a Complex Bis-Steroidal Diene Intermediate Using a Microwave Assisted Heck-Reaction
作者:E. Winterfeldt、T. Flessner、V. Ludwig、H. Siebeneicher
DOI:10.1055/s-2002-33118
日期:——
special set of Heck-conditions led reliably to a non-symmetric bis-steroidal diene which underwent regioselective high-pressure Diels-Alder cycloadditions with non-symmetric electron poor acetylenes. The cyclohexadienes thus obtained were aromatized to the corresponding benzene derivatives.
一组非常特殊的 Heck 条件可靠地导致非对称双甾体二烯与非对称贫电子乙炔进行区域选择性高压 Diels-Alder 环加成反应。将由此获得的环己二烯芳构化为相应的苯衍生物。