Journal of the American Chemical Society, Vol.132, No.38, 13191-13193, 2010
Stereospecific Suzuki-Miyaura Coupling of Chiral alpha-(Acylamino)benzylboronic Esters with Inversion of Configuration
The first invertive B-alkyl Suzuki-Miyaura coupling has been achieved. The coupling of enantioenriched alpha-(acylamino)benzylboronic esters with aryl bromides and chlorides took place efficiently in toluene at 80 degrees C in the presence of Pd(dba)(2) (5 mol %), XPhos (10 mol %), K2CO3 (3 equiv), and H2O (2 equiv). The reaction proceeded with inversion of configuration to give diarylmethanamine derivatives in high yields with high conservation of enantiomeric excesses.