Expedient Acylations of Primary and Secondary Alkyl Cyanides to α-Substituted β-Ketonitriles
摘要:
Primary and secondary cyanides are efficiently acylated with N-acylbenzotriazoles 3a-f (derived from a variety of acids) to afford the corresponding alpha-substituted beta-ketonitriles 5a-r in 67-96% yields.
Alkylation of active methylene compounds with alcohols catalyzed by an iridium complex
作者:Masao Morita、Yasushi Obora、Yasutaka Ishii
DOI:10.1039/b702293j
日期:——
Base-free catalytic alpha-alkylation of active methylene compounds with primary alcohols was successfully achieved using an [IrCl(cod)](2) complex in the presence of PPh(3) to afford the corresponding saturated alpha-alkylated products in good yields.
Expedient Acylations of Primary and Secondary Alkyl Cyanides to α-Substituted β-Ketonitriles
作者:Alan R. Katritzky、Ashraf A. A. Abdel-Fattah、Mingyi Wang
DOI:10.1021/jo026796x
日期:2003.6.1
Primary and secondary cyanides are efficiently acylated with N-acylbenzotriazoles 3a-f (derived from a variety of acids) to afford the corresponding alpha-substituted beta-ketonitriles 5a-r in 67-96% yields.
Synthesis of β-hydroxyamides through ruthenium-catalyzed hydration/transfer hydrogenation of β-ketonitriles in water: Scope and limitations
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。