当前位置: X-MOL 学术Org. Lett. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Aryl Pyrazoles from Photocatalytic Cycloadditions of Arenediazonium.
Organic Letters ( IF 4.9 ) Pub Date : 2020-09-04 , DOI: 10.1021/acs.orglett.0c02514
Luana Cardinale 1 , Michael Neumeier 1 , Michal Majek 2 , Axel Jacobi von Wangelin 1
Affiliation  

A photocatalytic synthesis of 1,5-diaryl pyrazoles from arenediazoniums and arylcyclopropanols is reported. The reaction proceeded under mild conditions (rt, 20 min) with catalytic [Ru(bpy)3]2+ under blue-light irradiation and exhibited compatibility with several functional groups (e.g., I, SF5, SO2NH2, N3, CN) and perfect levels of regiocontrol. Mechanistic studies (luminescence spectroscopy, CV, DFT, radical trapping, quantum yield determination) documented an initial oxidative quenching of the excited photocatalyst and the operation of a radical-chain mechanism.

中文翻译:

Arenediazonium的光催化环加成物中的芳基吡唑。

报道了由芳族二氮杂鎓和芳基环丙醇光催化合成1,5-二芳基吡唑。该反应在温和的条件下(室温,20分钟)与催化的[Ru(bpy)3 ] 2+在蓝光下进行,并显示出与多个官能团(例如I,SF 5,SO 2 NH 2,N 3)的相容性,CN)和完善的区域控制水平。机理研究(发光光谱,CV,DFT,自由基俘获,量子产率测定)证明了激发光催化剂的初始氧化猝灭和自由基链机理的运行。
更新日期:2020-09-20
down
wechat
bug