Synthesis of ethyl (13E)-trifluoromethylretinoate and its analogues by palladium-catalysed cross-coupling
作者:Jérôme Thibonnet、Gildas Prié、Mohamed Abarbri、Alain Duchêne、Jean-Luc Parrain
DOI:10.1016/s0040-4039(99)00414-1
日期:1999.4
Stereoselective construction of ethyl (13E)-trifluoromethylretinoate was achieved through two successive Stille reactions. The coupling of (E)-1,2-bis(tributylstannyl)ethene and ethyl (Z)-4,4,4-trifluoro-3-iodobut-2-enoate was performed first and followed by iododestannylation. The second step involved another vinyltin which was synthetised by stannylmetallation of the Nigishi dienyne 4c derived from
通过两个连续的Stille反应实现(13 E)-三氟甲基视黄酸乙酯的立体选择性结构。首先进行(E)-1,2-双(三丁基锡烷基)乙烯与(Z)-4,4,4-三氟-3-碘丁-2-烯酸酯的偶联,然后进行碘去锡基化反应。第二步涉及另一种乙烯基锡,该乙烯基锡是通过衍生自β-紫罗兰酮的Nigishi二烯炔4c的苯乙烯金属化反应合成的。某些yne类似物也可以通过Sonogashira与4c,d和5-碘-3-三氟甲基-pent-2,4-二烯酸3乙酯偶联制备。