A novel Fe-catalyzed olefin hydroamination with aryldiazo sulfones for accessing alkylarylazo compounds has been successfully developed. Aryldiazo sulfones are used as radical acceptors, and N–N double bonds will be regenerated when an arene sulfonyl group leaves. The reaction features mild reaction conditions and a broad substrate scope, allowing access to many azo compounds that would be difficult
Palladium-catalyzed Suzuki cross-coupling of N′-tosyl arylhydrazines
作者:Jin-Biao Liu、Hui Yan、Hui-Xuan Chen、Yu Luo、Jiang Weng、Gui Lu
DOI:10.1039/c3cc41421c
日期:——
The first palladium-catalyzedSuzukicross-coupling of N'-tosyl arylhydrazines with various organoboron reagents has been developed for the preparation of biaryl compounds in high yields. N'-Tosyl arylhydrazine as a readily available and stable electrophile also demonstrated its generality in a number of coupling reactions.
Green Oxidation of Aromatic Hydrazide Derivatives Using an Oxoammonium Salt
作者:Nidheesh Phadnis、Jessica A. Molen、Shannon M. Stephens、Shayne M. Weierbach、Kyle M. Lambert、John A. Milligan
DOI:10.1021/acs.joc.3c02752
日期:2024.4.19
oxidation of the corresponding hydrazides using stoichiometric quantities of nonrecyclable oxidants. We developed a convenient alternative protocol for the oxidation of aromatic hydrazides using Bobbitt’s salt (1), a metal-free, recyclable, and commercially available oxoammonium reagent. A variety of aryl hydrazides were oxidized within 75 min at room temperature using the developed protocol. Computational