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Reagents and conditions. i) 4-CN-PhB(OH)2, Pd(OAc)2, DME, Na2CO3(aq), MW, 80°C, 2h; ii) DIBAH, PhMe, 1h, 0°C, Ar; iii) (step 1) NH2-(CH2)n-4,7-ACQ, NaBH4, AcOH, MeOH/CH2Cl2 and (step 2) TFA; iv) (step 1) LHMDS, THF, r.t. and (step 2) HCl/EtOH.
