Stereocontrolled synthesis of exocyclic olefins using arene tricarbonyl chromium complex-catalyzed hydrogenation. I. Efficient synthesis of carbacyclin and its analogs.
作者:Mikiko SODEOKA、Yuji OGAWA、Yoshie KIRIO、Masakatsu SHIBASAKI
DOI:10.1248/cpb.39.309
日期:——
An efficient synthesis of carbacyclin and its analogs (2-7) is described in which the stereospecific 1,4-hydrogenation of a 1,3-diene to an internal monoene plays a key role. That is, arene.Cr(CO)3 complex-catalyzed 1,4-hydrogenation of the dienes 13 and 58, obtainable from the Corey lactone in good yields, under high H2 pressure afforded the exocyclic olefins 14 and 61 stereospecifically in excellent
描述了碳环素及其类似物(2-7)的有效合成,其中1,3-二烯的立体有规1,4-氢加氢成内部单烯起关键作用。也就是说,芳烃.Cr(CO)3络合物催化的二烯13和58的1,4-氢化可以高收率从Corey内酯获得,在高H2压力下,立体定向地得到环外烯烃14和61,收率很好。然后将这些中间体按照常规方法转化为可治疗的碳环素(2)及其类似物3-7。