Photocatalytic Conversion of Benzyl Alcohols/Methyl Arenes to Aryl Nitriles via H‐Abstraction by Azide Radical
作者:Maniklal Shee、Sk. Sheriff Shah、N. D. Pradeep Singh
DOI:10.1002/chem.202001332
日期:2020.11.6
aryl nitriles from easily accessible alcohols or methyl arenes in the presence of O2. Organic photoredox catalyst, 4CzIPN (1,2,3,5‐tetrakis(carbazol‐9‐yl)‐4,6‐dicyanobenzene), induces single electron transfer (SET) from azide N3− and generates azide radical N3⋅.The photogenerated N3⋅ abstracts H atom from α‐C−H bond of benzylic system, which provides aldehyde and hydrazoic acid (HN3) in situ. This
本报告介绍了在O 2存在下,由易于获得的醇或甲基芳烃在可见光辅助下合成芳基腈的方法。有机photoredox催化剂,4CzIPN从叠氮化物N(1,2,3,5-四(咔唑-9-基)-4,6-二氰基苯),诱导单电子转移(SET)3 - ,并且生成叠氮化物基团Ñ 3 ⋅。光生ñ 3 ⋅摘要氢原子从苄系统的α-C-H键,其提供了醛和叠氮酸(HN 3)原位。该反应随后形成叠氮基醇中间体,其在三氟甲磺酸(布朗斯台德酸)的帮助下转化为腈。一系列醇和甲基芳烃在室温下成功进行了氰化反应,收率好至极好,并显示出良好的官能团耐受性。