A practical and inexpensive ‘convertible’ isonitrile for use in multicomponent reactions
摘要:
N-tert-Butylamides are readily converted into the corresponding carboxylic acids by simple nitrosation. The process, which occurs under mild nonaqueous conditions, leaves carboxylic esters untouched and transforms multicomponent reaction products into useful building blocks for further synthetic elaboration. (C) 2010 Elsevier Ltd. All rights reserved.
Nickel-Catalyzed Multicomponent Coupling Reaction of Alkyl Halides, Isocyanides and H2O: An Expedient Way to Access Alkyl Amides
作者:Yunkui Liu、Bingwei Zhou、Qiao Li、Hongwei Jin
DOI:10.1055/s-0040-1707229
日期:2020.11
multicomponent coupling reaction of alkylhalides, isocyanides, and H2O to access alkyl amides. Bench-stable NiCl2(dppp) is competent to initiate this transformation under mild reaction conditions, thus allowing easy operation and adding practical value. Substrate scope studies revealed a broad functional group tolerance and generality of primary and secondary alkylhalides in this protocol. A plausible
Ligand-Controlled Regiodivergent Catalytic Amidation of Unactivated Secondary Alkyl Bromides
作者:Andreu Tortajada、Jose Tiago Menezes Correia、Eloisa Serrano、Alicia Monleón、Alberto Tampieri、Craig S. Day、Francisco Juliá-Hernández、Ruben Martin
DOI:10.1021/acscatal.1c02913
日期:2021.8.20
A regiodivergent Ni-catalyzed amidation of unactivated secondary alkyl bromides is described. The site-selectivity of the amidation event is dictated by subtle differences on the ligand backbone, allowing introduction of the amide function at either the original sp3 carbon–halide bond or at distal sp3 C–H sites within an alkyl side-chain via chain-walking scenarios.
描述了未活化仲烷基溴的区域发散性 Ni 催化酰胺化。酰胺化事件的位点选择性取决于配体骨架上的细微差异,允许在原始 sp 3碳卤键或烷基侧链内的远端 sp 3 C-H 位点引入酰胺功能链式行走场景。