Bu<sub>4</sub>NI-Catalyzed, Radical-Induced Regioselective <i>N</i>-Alkylations and Arylations of Tetrazoles Using Organic Peroxides/Peresters
作者:Suresh Rajamanickam、Chitranjan Sah、Bilal Ahmad Mir、Subhendu Ghosh、Garima Sethi、Vinita Yadav、Sugumar Venkataramani、Bhisma K. Patel
DOI:10.1021/acs.joc.9b02875
日期:2020.2.21
using tert-butyl hydroperoxide (TBHP) as the methyl source, alkyl diacyl peroxides as the primary alkyl source, alkyl peresters as the secondary and tertiaryalkyl sources, and aryl diacyl peroxides as the arylating source. These reactions proceed without pre-functionalization of tetrazole and in the absence of any metal catalysts. Here, peroxides serve the dual role of oxidants as well as alkylating or
Copper‐Catalyzed Photoinduced [3+3] Cycloaddition Reactions of α‐Acidic Isocyanides with Tetrazoles
作者:Hua‐Wei Liu、Yong‐Jiu Hao、Zhong‐Jian Cai、Shun‐Jun Ji
DOI:10.1002/adsc.202300598
日期:2023.11.7
photoinduced [3+3] cycloaddition reaction of α-acidic isocyanides with 2,5-diaryltetrazoles is described. The reaction proceeded smoothly with high regioselectivity, affording a range of important 1,2,4-triazines under mild conditions. The obtained 1,2,4-triazines were converted into triazine alcohol, Weinreb amide and triazinone easily, which further illustrate the utility of this [3+3] cycloaddition
Spirotriazolines and spirooxadiazolines are furnished in high yields at room temperature by the light-induced [3+2] cycloaddition with 2,5-diaryltetrazole as the precursor of nitrile imine. The use of light as the unique reagent and broad substrate scope are distinguishing features of this protocol.