K. Hiroi et T. Watanabe, Asymmetric Pauson-Khand reactions of chiral sulfinamides: Asymmetric synthesis of 3-azabicyclo[3.3.0]oct-5-en-7-one derivatives, HETEROCYCLE, 54(1), 2001, pp. 73-76
Unprecedented asymmetric Pauson-Khand reactions of chiral sulfinamides are
described. Cobalt-catalyzed reactions of chiral N-allyl-N-propargyl-N-aryls
ulfinamide derivatives were carried out in dichloromethane at -20 degreesC
similar to room temperature under carbon monoxide atmosphere in the presenc
e of Co-2(CO)(8) to give chiral 3-azabicyclo[3.3.0]oct-5-en-7-one with mode
rate or low enantioseleotivity.