Fig. 3: Scope of C2-substituted benzoazoles.

a Condition: 0.1 mmol substrate, 0.1 mmol Ph2SiH2, 5 mol% B(C6F5)3, 0.6 mL CDCl3, 110 °C, 8 h. Yields were measured by 1H NMR using mesitylene as internal standard (isolation yield in parenthesis). b 0.4 mmol Ph2SiH2. c 0.2 mmol Ph2SiH2.