作者:István E Markó、Graham R Evans、Jean-Paul Declercq
DOI:10.1016/s0040-4020(01)89387-x
日期:1994.4
Cycloaddition reactions between the chiral 2-pyrone derivatives 9 and various dienophiles, catalysed by lanthanide shift reagents, afforded diastereomerically pure bicyclic lactones 3. A catalytic asymmetric version of these reactions, using optically active lanthanide catalysts, was successfully investigated.
手性2-吡喃酮衍生物9与各种二烯类化合物之间的环加成反应,通过镧系元素转移试剂催化,得到非对映体纯的双环内酯3。使用光学活性镧系元素催化剂,已成功研究了这些反应的催化不对称形式。