📜2-甲基-4-(三氟甲基)嘧啶,2-溴-1,1-二乙氧基乙烷置于氢溴酸体系中,用 乙醇 作为反应溶剂,化学反应 19.0H,以83%的收率获得产物7-(三氟甲基)咪唑并[1,2-A]嘧啶
参考文献:The Expedient Synthesis Of 4,2'-Difluoro-5'-(7-Trifluoromethyl-Imidazo[1,2-A]Pyrimidin-3-yl)Biphenyl-2-Carbonitrile,A Gaba α2/3 Agonist
标题:The Expedient Synthesis Of 4,2'-Difluoro-5'-(7-Trifluoromethyl-Imidazo[1,2-A]Pyrimidin-3-yl)Biphenyl-2-Carbonitrile,A Gaba α2/3 Agonist
摘要:An Expedient Regioselective Synthesis Of A Gaba Alpha 2/3 Agonist 1 Is Described. The Key Step Is An Efficient Regioselective Palladium-Catalyzed Coupling Of 7-Trifluoromethylimidazo[1,2A] Pyrimidine (5) To 5'-Chloro-4,2'-Difluorobiphenyl-2-Carbonitrile (15). The Efficiency Of This Step Was Affected By The Choice Of Solvent,Ligand,And Tetrabutylammonium Salt Additive.
DOI:10.1021/op050217J