Phenyl- and tolylthallium(III) bis(trichloroacetate)s [ArTl(OCOCCl3)2, 1 (Ar=phenyl or tolyl)] were prepared from thallium(III) oxide, trichloroacetic acid, benzene, and toluene. The replacement of the thallium moiety in 1 with iodo, chloro, cyano, selenocyanato, and nitro groups and the aromatic coupling of 1 proceeded smoothly to give the corresponding aromatic derivatives in good yields. In the presence of PdCl2-NaOAc, 1 (Ar=phenyl) reacted with acrylonitrile and methacrylonitrile to afford cinnamonitriles(trans and cis) and a mixture of α-benzylacrylonitrile and β-phenylmethacrylonitriles(Z and E) respectively.
苯基和
甲苯基
铊(III)双(
三氯乙酸酯)[ArTl(OCOCCl3)2, 1 (Ar=苯基或
甲苯基)]由
三氧化二铊、
三氯乙酸、苯和
甲苯制备而成。在1中的
铊部分被
碘、
氯、
氰基、
硒氰酸根和硝基置换,并进行芳香族偶联反应,顺利地得到了相应的芳香族衍
生物,并且产率良好。在PdCl2-NaOAc的存在下,1 (Ar=苯基)与
丙烯腈和
甲基丙烯腈反应,分别得到了
肉桂腈(顺式和反式)以及α-苯基
丙烯腈和β-苯基
甲基丙烯腈(Z和E)的混合物。