However, in the presence of triethylamine, the geminal product is formed exclusively. At the tetrakis stage of chlorine replacement, the geminal isomer is the sole product irrespective of the reaction medium. The reaction of non-gem-N3P3CL3[NHC6H4(OMe)-p]3 with p-anisidine yields only N3P3[NHC6H4(OMe)-p]6; formation of non-geminal tetrakis derivatives could not be detected. The mechanistic implications of
六氯环三磷腈N 3 P 3 Cl 6与芳族
伯胺(
苯胺,对甲
苯胺和
对茴香胺)反应生成衍
生物N 3 P 3 Cl 6– n(NHC 6 H 4 Y- p)n [ Y = H,Me或OMe,n = 1或2(三个异构体);Y = OMe,n = 3(三个异构体),4(仅Geminal异构体),5或6]。这些衍
生物的结构及其异构体组成已通过31 P nmr光谱法和1相应的甲氧基和/或二甲基
氨基衍
生物的1 H nmr光谱。当使用二
乙醚,
四氢呋喃或MeCN作为溶剂时,在
氯替代的双阶段中,非主要产品占主导地位。但是,在
三乙胺的存在下,仅形成双晶产物。在
氯置换的四级阶段,双链异构体是唯一的产物,而与反应介质无关。非宝石-N 3 P 3 CL 3 [NHC 6 H 4(OMe)-p ] 3与对-茴香胺的反应仅产生N 3 P 3 [NHC 6 H 4(OMe)-p ] 6;无法检测到非双链四元衍
生物的形成。讨论了这些结果的机械含义。