Reactions of Organic Nitriles with a Three-Coordinate Molybdenum(III) Complex and with a Related Molybdaziridine-Hydride
作者:Yi-Chou Tsai、Frances H. Stephens、Karsten Meyer、Arjun Mendiratta、Mircea D. Gheorghiu、Christopher C. Cummins
DOI:10.1021/om030124v
日期:2003.7.1
used, reaction with PhCN gives the diiminato product analogous to the one mentioned for the tert-butyl system, [μ-NC(Ph)C(Ph)N][Mo(N[i-Pr]Ar)3]2, where molybdaziridine-hydride 2 has provided access to the three-coordinate Mo(N[i-Pr]Ar)3 (3) moiety. Use of a more bulky nitrile such as MesCN (Mes = 2,4,6-C6H2Me3) results in formation of a bis-η1 compound, (η1-MesCN)2[3]. Use of 9-anthracenylcarbonitrile
RCN腈的反应与空间位阻的Mo(N [吨-Bu]的Ar)3(1中,Ar = 3,5--C 6 H ^ 3我2)或稍差阻沫(H)(η 2 -Me 2已经研究了CNAr)(N [ i- Pr] Ar)2(2)。当R = Me或Ph时,与1的反应导致还原性腈偶联并形成二亚氨基产物[μ-NC(R)C(R)N] [ 1 ] 2。相比之下,反应1与我2 NCN令人惊讶地导致了稳定的,尽管高度拥塞时,η 2腈的加合物。当使用空间位阻较小的2时,与PhCN反应可生成二亚氨基产物,类似于对叔丁基系统所述的二亚氨基产物[μ-NC(Ph)C(Ph)N] [Mo(N [ i -Pr]] Ar)3 ] 2,其中氢化钼氮丙啶2提供了三配位Mo(N [ i- Pr] Ar)3(3)部分的通道。使用一个更庞大的腈如MesCN(MES = 2,4,6-C 6 H ^ 2我3)导致形成双η的1化合物,(η 1 -MesCN)2