Solvent-Free N-Alkylation of Amides with Alcohols Catalyzed by Nickel on Silica-Alumina
作者:Aubin Charvieux、Louis Le Moigne、Lorenzo G. Borrego、Nicolas Duguet、Estelle Métay
DOI:10.1002/ejoc.201901291
日期:2019.10.31
To date, the N‐alkylation of amides with alcohols has not been studied with non‐noble metal base heterogeneous catalyst. Herein, a range of amide was efficiently N‐alkylated with various alcohols using cheap and easy to handle Ni/SiO2‐Al2O3.
迄今为止,尚未使用非贵金属碱多相催化剂研究酰胺与醇的N-烷基化。在此,使用廉价且易于处理的Ni / SiO 2 -Al 2 O 3将各种酰胺有效地与各种醇进行N-烷基化。
Graphene oxide: a convenient metal-free carbocatalyst for facilitating amidation of esters with amines
作者:Khushbu P. Patel、Eknath M. Gayakwad、Ganapati S. Shankarling
DOI:10.1039/c9nj05283f
日期:——
Herein, we report a grapheneoxide (GO) catalyzed condensation of non-activated esters and amines, that can enable diverse amides to be synthesized from abundant ethyl esters forming only volatile alcohol as a by-product. GO accelerates ester to amide conversion in the absence of any additives, unlike other catalysts. A wide range of ester and amine substrates are screened to yield the respective amides
Microwave Specific Wolff Rearrangement of α-Diazoketones and Its Relevance to the Nonthermal and Thermal Effect
作者:Surendra G. Sudrik、Sambhaji P. Chavan、K. R. S. Chandrakumar、Sourav Pal、Sadgopal K. Date、Subhash P. Chavan、Harikisan R. Sonawane
DOI:10.1021/jo010951a
日期:2002.3.1
Z-configuration of the diazo functional group. Microwave irradiation of alpha-diazoketone (1a-m) (Figure 1) promotes Wolffrearrangement specifically via the Z-configuration in excellent yields. The dielectric properties of the solvent govern the course of the microwave rearrangement. 3-Diazocamphor (1m) on microwave irradiation in benzylamine exhibits nonthermal effects to furnish exclusively the Wolff rearrangement