Novel synthesis of 3-azabicyclo[3.1.0]hexanes by unusual palladium(0)-catalyzed cyclopropanation of allenenes

[GRAPHICS] Novel stereoselective synthesis of 3-azabicyclo[3.1.0]hexanes from allenenes is presented. Treatment of N-protected 4-alkyl-4-(N-allyl)amino allenes with allyl carbonate and a catalytic amount of Pd-2(dba)(3).CHCl3 in MeCN leads to stereoselective formation of the 3-azabicyclo[3.1.0]-hexane framework in moderate to good yields.