TBHP / R 4 N + X –偶氮二羧酸二烷基酯与甲基芳烃,醛,芳基甲醇和芳基甲基氯化物的加氢芳基化
摘要:
高效TBHP / R 4 Ñ + X -二烷基偶氮-1,2-二羧酸酯用甲基芳烃,醛,芳基甲醇和芳基甲基氯化物促进hydroaroylations进行说明。这些氧化/氧化和加氢芳基化过程是通过叔丁基氢过氧化物作为末端氧化剂/氧气源进行的,并被四丁基溴化铵和三辛基甲基氯化铵作为驱动力来催化。在这项研究过程中,发现所有这些加氢芳基化源都是高效试剂,不需要任何过渡金属。
Efficient Method to Synthesize Benzhydrazides by In Situ
Oxidation/Coupling of Benzylic Alcohols with Azodicarboxylates
作者:Kobra Azizi、Akbar Heydari
DOI:10.1055/s-0036-1591311
日期:2018.1
An efficient synthesis of benzhydrazides has been achieved through the direct acylation of azodicarboxylates with benzylicalcohols in moderate to high yields. The method represents the first practical approach to amides containing a hydrazine structural unit frombenzylicalcohols.
A facile, one-pot procedure for the conversion of aromatic aldehydes to esters, as well as thioesters and amides, via acyl hydrazide intermediates
作者:Antoine Maruani、Maximillian T. W. Lee、George Watkins、Ahmed R. Akhbar、Henry Baggs、André Shamsabadi、Daniel A. Richards、Vijay Chudasama
DOI:10.1039/c5ra26842g
日期:——
Herein we present an efficient method for the synthesis of esters from aromatic aldehydes via readily accessible acyl hydrazides. The developed reaction protocol is shown to be tolerant of a range of aromatic aldehydes, bearing various functionalities, as well as being amenable to the synthesis of thioesters and amides.
CuO Nanoparticles Supported on Silica: A Simple, Efficient, and Recyclable Catalyst for Hydroacylation Reactions of Aldehydes with Azodicarboxylate
作者:Suleman M. Inamdar、Vinod K. More、Sisir K. Mandal
DOI:10.1246/cl.2012.1484
日期:2012.11.5
We describe a green and efficient procedure for the hydroacylation of aldehydes with diisopropyl azodicarboxylate, using CuO nanoparticles supported on silica (CuO-np/SiO2) as a catalyst, in good to excellent yields. A wide range of aldehydes, including aromatic and aliphatic compounds, were considered. The catalyst is found to be truly heterogeneous in the reaction mixture and can be reused without loss of catalytic activity.
<scp>Visible‐Light‐Mediated Photocatalyst‐Free</scp> Hydroacylation of Azodicarboxylic Acid Derivatives with <scp>4‐Acyl</scp>‐1,4‐dihydropyridines
作者:Li Liu、Jing Wang、Xiaoying Feng、Kun Xu、Wei Liu、Xia Peng、Hongguang Du、Jiajing Tan
DOI:10.1002/cjoc.202300726
日期:——
azodicarboxylic acidderivatives was described. This radical conjugate addition (RCA) protocol relied on the dual role of 4-acyl-1,4-dihydropyridine (acyl-DHP) reagents that besides being as radical reservoirs, they also enabled the conversion of radical adducts to anion intermediates viareduction. Under “catalyst-oxidant-additive free” conditions, a wide range of structurally different acyl hydrazide products
An efficient metal free hydroacylation of aromatic aldehydes with azadicarboxylate has been developed using pyridine as a catalyst providing an easy access for hydroacylation products in good yields. (C) 2014 Elsevier Ltd. All rights reserved.