Regioselective molybdenum-catalyzed hydrostannations of acetylenic ketones give rise to allenoxystannanes, which can be subjected to subsequent aldol reactions. Because aldehydes are not affected under the reaction conditions used, the hydrostannation-aldol addition can be performed as a one-pot reaction, providing easy access to substituted Morita-Baylis-Hillman-type products in a highly stereoselective fashion.
在
钼催化下,
乙炔酮发生区域选择性加氢
锡化反应,生成可进行后续醛醇反应的烯氧基
锡烷。由于在所使用的反应条件下醛不会受到影响,因此氢化
锡-醛醇加成反应可以作为单锅反应进行,从而以高度立体选择性的方式轻松获得取代的 Morita-Baylis-Hillman 型产品。