Bidentate Oxazoline−Imine Ruthenium(II) Complexes: Intermediates in the Methanolysis/Hydration of Nitrile Groups
摘要:
The reaction of [RuCl2(p-cymene)](2) with benzoxazoleacetonitriles and NH4+BF4- in methanol leads to bidentate N,N'-benzoxazole-methoxyimine-ruthenium(II) complexes 7, corresponding to the addition of methanol to the ruthenium(II)-activated nitrile triple bond. The X-ray structure of a complex 7 shows equivalent Ru-N and slightly different C=N bond distances. The catalytic hydration of benzoxazolacetonitriles with [RuCl2(p-cymene)](2) in methanol/water leads to quantitative formation of corresponding amides under mild conditions.
Mild and Practical Method for the α-Arylation of Nitriles with Heteroaryl Halides
作者:Artis Klapars、Jacob H. Waldman、Kevin R. Campos、Mark S. Jensen、Mark McLaughlin、John Y. L. Chung、Raymond J. Cvetovich、Cheng-yi Chen
DOI:10.1021/jo051737f
日期:2005.11.1
aliphatic nitriles with activated heteroaryl halides was developed using NaHMDS or KHMDS as base at ambient temperature. The key to the success of this method is generation of the nitrileanion in the presence of the heteroaryl halide. The method is applicable to both primary and secondary carbonitriles and a wide range of heteroaryl halides. Selective monoarylation was observed with primary carbonitriles
Bidentate Oxazoline−Imine Ruthenium(II) Complexes: Intermediates in the Methanolysis/Hydration of Nitrile Groups
作者:Hamed Ben Ammar、Xiaowei Miao、Cédric Fischmeister、Loic Toupet、Pierre H. Dixneuf
DOI:10.1021/om100674x
日期:2010.10.11
The reaction of [RuCl2(p-cymene)](2) with benzoxazoleacetonitriles and NH4+BF4- in methanol leads to bidentate N,N'-benzoxazole-methoxyimine-ruthenium(II) complexes 7, corresponding to the addition of methanol to the ruthenium(II)-activated nitrile triple bond. The X-ray structure of a complex 7 shows equivalent Ru-N and slightly different C=N bond distances. The catalytic hydration of benzoxazolacetonitriles with [RuCl2(p-cymene)](2) in methanol/water leads to quantitative formation of corresponding amides under mild conditions.