Scheme 37.
a) 2-chloroaniline, 5 mol% Pd(OAC)2, 7.5 mol% Xantphos, 1.5 eq. Cs2CO3, toluene, 100 °C, 15 h, 94%. b) Pd(OAC)2, (t-Bu)3P HBF4, K2CO3, DMAc, 120 °C, 16 h, 83%.
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