作者:Erwin Hohn、Jiří Paleček、Jörg Pietruszka、Wolfgang Frey
DOI:10.1002/ejoc.200900414
日期:2009.8
products in organic synthesis. The corresponding enantiomerically pure boronic esters should lead to highly flexible building blocks with a variety of applications. A detailed study towards the selective synthesis of (E)- and (Z)-vinyl derivatives starting from the known diastereo- and enantiopure cyclopropylmethanols 3 and 4 is presented. The boronic esters were activated via their trifluoroboronates;
乙烯基环丙烷是有机合成中的多功能中间体和产品。相应的对映异构纯硼酸酯应该会产生具有多种应用的高度灵活的构建块。介绍了从已知的非对映纯和对映纯环丙基甲醇 3 和 4 开始选择性合成 (E)- 和 (Z)- 乙烯基衍生物的详细研究。硼酸酯通过其三氟硼酸盐活化;讨论了反应的优化。这项努力最终合成了 (-)-(1S,2S)-dictyopterene A (38)。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)