Fig. 29.
Reagents: a BF3, Et2O, THF; b Tf2O, 2,6-lutidine, DCM; c C5H11ZnCl, Pd(dppf)Cl2, LiCl, THF; d Pd(dppf)Cl2, LiCl, THF and e CH3MgBr, toluene, 110 °C, 12 h
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