Palladium Catalyzed Coupling Reaction of an Enol Nonaflate with (Vinyl)tributylstannanes and Acetylenes
作者:Akimori Wada、Yasuhiro Ieki、Masayoshi Ito
DOI:10.1055/s-2002-32602
日期:——
stereoselective synthesis of trienes and dienynes was developed by palladium catalyzed cross couplingreactions of an enol nonaflate with (vinyl)tributylstannanes and acetylenes in good to excellent yields. Here, the enol nonaflate exhibited a higher reactivity compared with the corresponding enol triflate in the couplingreactions.
Palladium-Catalyzed Coupling Reaction of an Enol Nonaflate with (Vinyl)tributylstannanes and Acetylenes: A Highly Stereoselective Synthesis of 8,18-<sup>13</sup>C<sub>2</sub>-Labeled Retinal
作者:Akimori Wada、Yasuhiro Ieki、Saeko Nakamura、Masayoshi Ito
DOI:10.1055/s-2005-865294
日期:——
Here we report that enol nonaflates exhibit higher reactivity than the corresponding enol triflates in palladium-catalyzed cross-coupling reactions with various (vinyl)tributylstannanes and acetylenes. We also highlight the reaction of a vinyl nonaflate, containing two 1 3 C-labeled carbon atoms with an alkenyl stannane, which afforded the trisubstituted E-olefin stereoselectively in high yield. The
在这里,我们报告烯醇九氟甲磺酸酯在钯催化的与各种(乙烯基)三丁基锡烷和乙炔的交叉偶联反应中表现出比相应的烯醇三氟甲磺酸酯更高的反应性。我们还强调了含有两个 1 3 C 标记的碳原子的乙烯基九烷基锡与烯基锡烷的反应,它以高产率立体选择性地提供了三取代的 E-烯烃。然后将 E-烯烃转化为相应的全 E-视黄醛。