Shibata Takanori, Takami Kyoko, Kawachi Ai
Department of Chemistry, School of Science and Engineering, Waseda University, Shinjuku, Tokyo 169-8555, Japan.
Org Lett. 2006 Mar 30;8(7):1343-5. doi: 10.1021/ol060055r.
[reaction: see text] The enantioselective [2 + 2] cycloaddition of alkynes possessing an ester functionality and norbornene derivatives proceeded efficiently using a chiral rhodium catalyst. The chiral tri- and tetracyclic cyclobutenes were obtained in moderate to high ee.
[反应:见正文] 使用手性铑催化剂,具有酯官能团的炔烃与降冰片烯衍生物的对映选择性[2 + 2]环加成反应能高效进行。可得到中等至较高对映体过量的手性三环和四环环丁烯。