Formation and aromatization of strained bicyclic pyrazolidines via tandem reaction of alkyl 2-aroyl-1-chlorocyclopropanecarboxylates with acylhydrazones
作者:Zhimei Huang、Junhao Hu、Yuefa Gong
DOI:10.1039/c5ob01199j
日期:——
The formation and aromatization of strained bicyclic pyrazolidines.
扭环双环吡嗪啉的形成和芳香化。
COMPOUNDS USEFUL AS MODULATORS OF TRPM8
申请人:SENOMYX, INC.
公开号:US20150376136A1
公开(公告)日:2015-12-31
The present invention includes compounds useful as modulators of TRPM8, such as compounds of Formulae (Ia), (Ib) and (Ic), and the subgenus and species thereof; personal products containing those compounds; and the use of those compounds and the personal products, particularly the use of increasing or inducing chemesthetic sensations, such as cooling or cold sensations.
Zinc Chelate Complexes of N‐Acyl Hydrazones as Substrates for Addition of Alkyl and Fluorinated Radicals
作者:Zakhar M. Rubanov、Vitalij V. Levin、Alexander D. Dilman
DOI:10.1002/adsc.202300606
日期:2023.8.10
Zinc chelate complexes can be generated in situ from N-acyl hydrazones by treatment with isopropyl zinc iodide. These complexes couple with alkyl and fluorinated radicals under photoredox conditions. Alkyl radicals were generated from organozinc halides using an organic photocatalyst and afford hydrazines as a result of reductive mode of addition. Fluorinated radicals were formed from perfluorinated
An efficient oxidant-free, photoredox-mediated cascade cyclization strategy for the synthesis of 1,3,4-oxadiazoles by using an organo acridinium photocatalyst and a cobaloxime catalyst has been developed. Various acylhydrazones have been transformed into the corresponding 1,3,4-oxadiazole products in up to 96% yield, and H2 is the only byproduct. Mechanistic experiments and density functional theory
Dual Acridine/Decatungstate Photocatalysis for the Decarboxylative Radical Addition of Carboxylic Acids to Azomethines
作者:Zakhar M. Rubanov、Vitalij V. Levin、Alexander D. Dilman
DOI:10.1021/acs.orglett.4c00778
日期:2024.4.19
A concept for the dual use of acridine and tetrabutylammonium decatungstate photocatalysts in the reactions of carboxylic acids is proposed. Imines generated in situ from aldehydes and p-methoxyaniline, as well as other azomethines, were used as radical acceptors. The role of the decatungstate is believed to facilitate the turnover of the acridine photocatalyst by means of hydrogen atom transfer.