oxidative coupling of 4-anilinoquinazoline-2-carbonitriles in neat trifluoroacetic acid (TFA); (2) a Pd(OAc)2 (10 mol %) or CuI (10 mol %) mediated nonoxidative coupling of 4-(2-bromoanilino)quinazoline-2-carbonitrile; and (3) a nonoxidative Pd(Ar3P)3 [Ar = 3,5-(F3C)2C6H3] [aka Superstable Pd(0) Catalyst] (10 mol %) mediated intramolecular C–N cyclization of 3-(2-bromophenyl)-4-imino-3,4-dihydroquina
苯并[4,5]
咪唑并[1,2 - c ]
喹唑啉-6-腈是通过三种新途径高收率制备的:(1)Cu(OTf)2(0-5 mol%)催化的高价
碘[PhI (OTf)2 ]在纯
三氟乙酸(TFA)中介导的4-
苯胺基
喹唑啉-2-腈的氧化偶联;(2)Pd(OAc)2(10 mol%)或CuI(10 mol%)介导的4-(
2-溴苯胺基)
喹唑啉-2-腈的非氧化偶联; 和(3)非氧化性Pd(Ar 3 P)3 [Ar = 3,5-(F 3 C)2 C 6 H 3] [又名超稳定的Pd(0)催化剂](10摩尔%)介导了3-(2-
溴苯基)-4-亚
氨基-3,4-二氢
喹唑啉-2-腈的分子内C–N环化。所有新化合物均已充分表征。