Rhodium(II)-Catalyzed Enantioselective Synthesis of Troponoids
作者:Sandip Murarka、Zhi-Jun Jia、Christian Merten、Constantin-G. Daniliuc、Andrey P. Antonchick、Herbert Waldmann
DOI:10.1002/anie.201502233
日期:2015.6.22
We report a rhodium(II)‐catalyzed highly enantioselective 1,3‐dipolar cycloaddition reaction between the carbonyl moiety of tropone and carbonyl ylides to afford troponoids in good to high yields with excellent enantioselectivity. We demonstrate that α‐diazoketone‐derived carbonyl ylides, in contrast to carbonyl ylides derived from diazodiketoesters, undergo [6+3] cycloaddition reactions with tropone