scheme5

Scheme 5. Scopes of arylboronic acids and aryldiazonium salts^a. ^aUnless otherwise noted, the reaction was conducted with 6a(0.2 mmol),3 (0.2 mmol), 4 (0.1 mmol), Cs₂CO₃ (0.3 mmol), (R)-1a (0.012 mmol) and Pd₂dba₃ (0.004 mmol) in MTBE (2 mL) at 0 ºC for 48 h under Ar. Isolated yields are shown. The er values were determined by SFC.