CRANDALL J. K.; CONOVER W. W.; KOMIN J. B., J. ORG. CHEM. <JOCE-AH>, 1975, 40, NO 14, 2042-2044
作者:CRANDALL J. K.、 CONOVER W. W.、 KOMIN J. B.
DOI:——
日期:——
Eight-Step Enantioselective Total Synthesis of (−)-Cycloclavine
作者:Stephanie R. McCabe、Peter Wipf
DOI:10.1002/anie.201608820
日期:2017.1.2
The first enantioselectivetotalsynthesis of (−)‐cycloclavine was accomplished in 8 steps and 7.1 % overall yield. Key features include the first catalytic asymmetric cyclopropanation of allene, mediated by the dirhodium catalyst Rh2(S‐TBPTTL)4, and the enone 1,2‐addition of a new TEMPO carbamate methyl carbanion. An intramolecular strain‐promoted Diels–Alder methylenecyclopropane (IMDAMC) reaction