5-(Trimethylstannyl)-2<i>H</i>-pyran-2-one and 3-(Trimethylstannyl)-2<i>H</i>-pyran-2-one: New 2<i>H</i>-Pyran-2-one Synthons
作者:Zhi Liu、Jerrold Meinwald
DOI:10.1021/jo951394t
日期:1996.1.1
5-(Trimethylstannyl)-2H-pyran-2-one (11) and 3-(trimethylstannyl)-2H-pyran-2-one (30), readily prepared from the corresponding bromo-2H-pyran-2-ones, undergo Pd(0)-catalyzed coupling reactions with a variety of enol triflates to give 5- and 3- substituted 2H-pyran-2-ones, respectively, This reaction is applicable to the enol triflates of 14 beta-hydroxy-17-ketosteroids, and therefore may prove useful in convergent syntheses of lucibufagins and bufadienolides.
Parkinson, Christopher J.; Pinhey, John T.; Stoermer, Martin J., Journal of the Chemical Society. Perkin transactions I, 1992, # 15, p. 1911 - 1915
作者:Parkinson, Christopher J.、Pinhey, John T.、Stoermer, Martin J.