Efficient Solvent-Free Selective Monoalkylation of Arylacetonitriles with Mono-, Bis-, and Tris-primary Alcohols Catalyzed by a Cp*Ir Complex
摘要:
Our objectives were to develop catalytic atom-economic processes accessing and/or incorporating versatile functionality using aryl/heteroaryl acetonitriles as substrates. We report essentially solvent-free [Cp*IrCl2](2) catalyzed redox neutral processes whereby substituted acetonitriles react with primary alcohols to deliver monosubstituted aryl/heteroaryl acetonitriles in excellent yield. We further demonstrate that such processes can be achieved by conventional or microwave heating and that bis- and tris-primary alcohols are also processed efficiently.
Pyridylacetonitrile derivatives, inclusive of acid salts and metal complexes thereof, of the general formula
wherein X is a halogen atom or a phenylethynyl group, Y is a hydrogen atom, a halogen atom, a methyl group or a trifluoromethyl group, R is a lower alkyl group or a phenyl group which may be substituted or unsubstituted with a halogen atom. These novel pyridylacetonitrile compounds are suitable for use as fungicides or germicides.
通式如下的吡啶乙腈衍生物,包括其酸盐和金属络合物
其中 X 为卤素原子或苯乙炔基,Y 为氢原子、卤素原子、甲基或三氟甲基,R 为低级烷基或苯基,可被卤素原子取代或未被卤素原子取代。这些新型吡啶乙腈化合物适合用作杀真菌剂或杀菌剂。
Efficient Solvent-Free Selective Monoalkylation of Arylacetonitriles with Mono-, Bis-, and Tris-primary Alcohols Catalyzed by a Cp*Ir Complex
作者:Christian Löfberg、Ronald Grigg、Mark A. Whittaker、Ann Keep、Andrew Derrick
DOI:10.1021/jo061113p
日期:2006.10.1
Our objectives were to develop catalytic atom-economic processes accessing and/or incorporating versatile functionality using aryl/heteroaryl acetonitriles as substrates. We report essentially solvent-free [Cp*IrCl2](2) catalyzed redox neutral processes whereby substituted acetonitriles react with primary alcohols to deliver monosubstituted aryl/heteroaryl acetonitriles in excellent yield. We further demonstrate that such processes can be achieved by conventional or microwave heating and that bis- and tris-primary alcohols are also processed efficiently.