Formation of imidates, amides, amines, carbamates, and ureas from the .mu.3-NPh ligands of Fe3(.mu.3-NPh)2(CO)9
作者:Gregory D. Williams、R. R. Whittle、Gregory L. Geoffroy、Arnold L. Rheingold
DOI:10.1021/ja00247a018
日期:1987.6
3-NPh)2(CO)8(C)OEt)Ph)(9) which has been structurally characterized. The carbene and nitrene ligands in 9 couple to form the imidate PhN double bond C(OEt)Ph when 9 is exposed to air or allowed to stand in solution for prolonged periods under CO or N2 atmospheres. Similar nitrene-benzoyl coupling from 7 gives benzanilide, and the methoxycarbonyl and nitrene ligands in 8 couple to give methyl N-phenylcarbamate when
双(氮)簇 Fe3(3-NPh)2(CO)9 (1) 与 Li(HBEt3)、MeLi、PhLi 和 NaOMe 反应形成甲酰基和酰基簇 (Fe3(3-NPh)2(CO) )8C)O)R) (4, R = H; 6, R = Ph; 7, R = Me; 8, R = OMe)。甲酰基簇 4 在室温下不稳定并缓慢失去 CO 以形成氢化物簇 (HFe3(3-NPh)2(CO)8)。苯甲酰基簇 7 与 EtOTf 反应生成氮烯-卡宾簇 Fe3(3-NPh)2(CO)8(C)OEt)Ph)(9),其结构已被表征。当 9 暴露在空气中或在 CO 或 N2 气氛下长时间放置在溶液中时,9 中的卡宾和氮烯配体结合形成亚胺酸 PhN 双键 C(OEt)Ph。来自 7 的类似氮烯-苯甲酰基偶联得到苯甲酰苯胺,当簇被 (FeCp2) 氧化降解时,8 中的甲氧基羰基和氮烯配体偶联生成 N-苯基氨基甲酸甲酯。双(膦)簇