5-Aryltetrazoles from Direct C–H Arylation with Aryl Bromides
作者:Yuan Zhang、Jack Chang Hung Lee、Matthew R. Reese、Brian P. Boscoe、John M. Humphrey、Christopher J. Helal
DOI:10.1021/acs.joc.0c00085
日期:2020.4.17
A mild, direct C–H arylation of 1-substituted tetrazoles to 5-aryltetrazoles is developed using a Pd/Cu cocatalytic system with readily available aryl bromides. The methodology avoids late-stage usage of azides and tolerates a wide range of functionalities.
The Effect of Some Substituents on the Thermal Breakdown of Diaryltetrazoles<sup>1</sup>
作者:JOHN VAUGHAN、PETER A. S. SMITH
DOI:10.1021/jo01106a023
日期:1958.12
Direct C−H Arylation and Alkenylation of 1-Substituted Tetrazoles: Phosphine As Stabilizing Factor
作者:Marcel Špulák、Richard Lubojacký、Petr Šenel、Jiří Kuneš、Milan Pour
DOI:10.1021/jo902180u
日期:2010.1.1
Direct arylation and alkenylation of 1-substituted tetrazoles was achieved via Pd catalysis in the presence of CuI and CS2CO3. Unlike the related reactions of imidazoles and purines, phosphine ligand was necessary to prevent the intermediate tetrazolyl-Pd-II species from fragmentation into the corresponding cyanamide, Various 1,5-disubstituted tetrazoles were prepared with good to excellent isolated yields.