An efficient method for the regioselective preparation of 1,3-dimethylenecyclobutanes based on Ru-catalyzed dimerization of readily available CF3-containing functionalized allenes including α-amino acid derivatives have been developed. The reactions smoothly proceed in toluene at 100 °C in the presence of catalytic amounts (5 mol%) of naphthalene-containing ruthenium system [Cp*Ru(C10H8)]PF6/[Et3NBn]Cl
已经开发了一种有效的区域选择性制备 1,3-二
亚甲基环丁烷的方法,该方法基于容易获得的含CF 3的功能化
丙二烯(包括
α-氨基酸衍
生物)的Ru 催化二聚化。在催化量 (5 mol%) 的含
萘钌体系 [Cp*Ru(C 10 H 8 )]PF 6 /[Et 3 NBn]Cl的存在下,反应在 100 °C 的
甲苯中平稳进行,以独家提供尾对尾偶联产品具有良好到优异的产率。