Enzymatic nitrile hydrolysis catalyzed by nitrilase ZmNIT2 from maize. An unprecedented β-hydroxy functionality enhanced amide formation
作者:Chandrani Mukherjee、Dunming Zhu、Edward R. Biehl、Rajiv R. Parmar、Ling Hua
DOI:10.1016/j.tet.2006.04.069
日期:2006.6
To explore the synthetic potential of nitrilase ZmNIT2 from maize, the substrate specificity of this nitrilase was studied with a diverse collection of nitriles. The nitrilase ZmNIT2 showed high activity for all the tested nitriles except benzonitrile, producing both acids and amides. For the hydrolysis of aliphatic, aromatic nitriles, phenylacetonitrile derivatives and dinitriles, carboxylic acids
A cascade process for the straightforward one-pot conversion of β-ketonitriles into β-hydroxyamides is presented. The process, that proceeds in water employing the arene-ruthenium(II) complex [RuCl2(η6-p-cymene)P(4-C6H4F)2Cl}] as catalyst in combination with sodium formate, involves the initial hydration of the β-ketonitrile substrates to generate the corresponding β-ketoamide intermediates, which
提出了一种简单的一锅法将β-乙腈转化为β-羟酰胺的级联方法。的过程中,在水中进行采用芳烃-钌(II)络合物将[RuCl 2(η 6 - p -cymene)P(4-C 6 H ^ 4 F)2氯}]如甲酸钠催化剂组合该方法涉及β-酮腈底物的初始水合反应,以生成相应的β-酮酰胺中间体,然后对其进行羰基的转移氢化(TH)。雇用40个不同的β族-乙腈具有不同的取代模式,已经确定了该方法的范围和局限性。
Ruthenium-Catalyzed Synthesis of β-Hydroxyamides from β-Ketonitriles in Water
An unprecedented hydration/transfer hydrogenation tandem process for the catalytic conversion of β-ketonitriles into synthetically useful β-hydroxyamides in water has been developed, making use of the ruthenium(II) complex [RuCl2(η6-p-cymene)P(4-C6H4F)2Cl}] in combination with sodium formate.
对于β酮腈的催化转化成在水中合成有用β羟基酰胺前所未有的水合/转移氢化串联过程已经被开发,利用钌(II)络合物将[RuCl 2(η 6 - p -cymene)P (4-C 6 H 4 F)2 Cl}]与甲酸钠组合。
PYRIMIDINE DERIVATIVES AS OREXIN RECEPTOR ANTAGONISTS