Copper-mediated imine–nitrile coupling leading to unsymmetric 1,3,5-triazapentadienato complexes containing the incorporated iminoisoindolin-1-one moiety
作者:Maximilian N. Kopylovich、Konstantin V. Luzyanin、Matti Haukka、Armando J. L. Pombeiro、Vadim Yu. Kukushkin
DOI:10.1039/b805243c
日期:——
The copper(II)-mediated integration between various 3-iminoisoindolin-1-ones and neat organonitriles (which play a dual role of solvent and reactant), under heating for ca. 12 h, and without requiring any base, accomplishes the release of the solid (1,3,5-triazapentadienato)CuII complexes [CuHN=C(R)NC(C6R1R2R3R4CO)N}2] (1â11) bearing the incorporated iminoisoindolin-1-one fragment. These compounds were isolated in moderate to good yields (44â78%) and do not require further purification. The iminoisoindolinoneânitrile coupling is CuII-mediated and has a general character insofar as it can be efficiently applied for both unsubstituted (R1âR4 = H) and substituted iminoisoindolin-1-ones (R1, R3, R4 = H, R2 = Me; R1, R4 = H, R2, R3 = Cl; R1âR4 = F), and a wide range of nitriles (R = Me, Et, Prn, Pri, C6H11, CH2Ph). Complexes 1â11 were characterized by elemental analyses (C, H, N), FAB+-MS, IR spectroscopy, and additionally compounds 1, 2 and 4 by single-crystal X-ray diffraction.
铜(II)介导的各种 3-亚氨基异吲哚啉-1-酮与纯有机腈类化合物(起着溶剂和反应物的双重作用)之间的结合,在加热约 12 小时的情况下,不需要任何碱,就能释放出固体(1,3,5-三氮杂戊二烯)CuII 复合物[CuHN=C(R)NC(C6)]。在加热约 12 小时后,不需要任何碱,就能释放出含有掺入的亚氨基异吲哚啉-1-酮片段的固体(1,3,5-三氮杂戊二烯)CuII 复合物[CuHN=C(R)NC(C6R1R2R3R4CO)N}2] (1â11)。这些化合物以中等至良好的收率(44%-78%)分离出来,无需进一步纯化。亚氨基异吲哚啉酮与腈的偶联反应是由 CuII 介导的,具有通用性,可以有效地应用于未取代的(R1âR4 = H)和取代的亚氨基异吲哚啉-1-酮(R1, R3, R4 = H, R2 = Me;R1, R4 = H, R2, R3 = Cl;R1âR4 = F)以及多种腈类(R = Me, Et, Prn, Pri, C6H11, CH2Ph)。络合物 1â11 通过元素分析(C、H、N)、FAB+-MS 和红外光谱进行表征,化合物 1、2 和 4 则通过单晶 X 射线衍射进行表征。