Rhodium(I)-Catalyzed Cycloisomerization of Alkene-Substituted Allenylcyclopropanes: Stereoselective Formation of Bicyclo[4.3.0]nonadienes
作者:Katsuya Sugikubo、Fukiko Omachi、Yuuki Miyanaga、Fuyuhiko Inagaki、Chiaki Matsumoto、Chisato Mukai
DOI:10.1002/anie.201305958
日期:2013.10.18
ring‐opening of both E and Z 1‐cyclopropylocta‐1,2,6‐trienes exclusively produced cis‐4,5‐dimethylbicyclo[4.3.0]nona‐1(9),2‐dienes with three contiguous stereogenic centers. When this transformation was applied to the 1,2,7‐triene double‐bond isomers, the same products were formed in a completely stereoselective manner (see scheme).
消耗能量的有效途径:E和Z的[RhCl(CO)2 } 2 ]催化开环1–环丙基辛基1,2,6-三烯专门生产顺式4,5,5-二甲基双环[4.3.0] nona-1(9),2-二烯具有三个连续的立体生成中心。当将此转化应用于1,2,7-三烯双键异构体时,相同的产物以完全立体选择性的方式形成(参见方案)。