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Reagents and conditions: (a)269 CuCl2, 1-phenylethan-1-amine, MeOH, DCM, 0 °C to rt, 2 h; (b) CuI, pivalic acid, DMSO, 130 °C, 2 h; (c)82 CuCl, K2CO3, N-methylimidazole, 120 °C, 20 h, 64%; (d) n-dodecanethiol, NaOH, NMP, 130 °C, 4 h, 93%; (e) Cu-TMEDA, DCM, rt, 5 min; (f) CuCl, K2CO3, N-methylimidazole, 120 °C, 20 h.
