<i>N</i>-Iodosuccinimide-Promoted [3 + 2] Annulation Reaction of Aryldiazonium Salts with Guanidines To Construct Aminotetrazoles
作者:Yi-Lin Yang、Shen Li、Fa-Guang Zhang、Jun-An Ma
DOI:10.1021/acs.orglett.1c03395
日期:2021.11.19
A N-iodosuccinimide (NIS)-promoted [3 + 2] annulation reaction of aryldiazonium salts with guanidines has been developed for the construction of previously elusive 2-aryl-5-amino-2H-tetrazoles. This transformation takes advantage of readily available starting materials, proceeds under metal-free, mild, and robust conditions, and holds broad functional group compatibility. The utility of this protocol
Method for Preparing 2-Alkoxy-5-Tetrazolyl-Benzaldehyde Compound
申请人:Hagiya Kazutake
公开号:US20070265452A1
公开(公告)日:2007-11-15
The present invention provides a method for safely and efficiently preparing 2-alkoxy-5-tetrazolyl-benzaldehyde compounds by formylating (4-alkoxyphenyl)-tetrazole compounds. The present invention provides a method for preparing 2-alkoxy-5-(alkyltetrazole-5-yl)-benzaldehyde by reacting a 5-(4-alkoxyphenyl)-alkyl-tetrazole with hexamethylenetetramine in a sulfonic acid solvent, followed by hydrolysis; and a method for preparing 2-alkoxy-5-(tetrazole-2-yl)-benzaldehyde compounds by reacting 2-(4-alkoxyphenyl)-2H-tetrazole compounds with hexamethylenetetramine in a sulfonic acid solvent, followed by hydrolysis.
Synthesis of 2-aryl-2H-tetrazoles via a regioselective [3+2] cycloaddition reaction
作者:Remi Patouret、Theodore M. Kamenecka
DOI:10.1016/j.tetlet.2016.02.102
日期:2016.4
A regioselective cycloaddition reaction of arenediazonium salts with trimethylsilyldiazomethane is reported. A series of 2-aryltetrazoles were obtained in good to moderate yields with wide functional group compatibility. Furthermore, this cycloaddition reaction opens the way to build up the versatile intermediate 2-aryl-5-bromotetrazole.
METHOD FOR PREPARING 2-ALKOXY-5-TETRAZOLYL-BENZALDEHYDE COMPOUND
申请人:TOYO KASEI KOGYO COMPANY LIMITED
公开号:EP1813605A1
公开(公告)日:2007-08-01
The present invention provides a method for safely and efficiently preparing 2-alkoxy-5-tetrazolyl-benzaldehyde compounds by formylating (4-alkoxyphenyl)-tetrazole compounds.
The present invention provides a method for preparing 2-alkoxy-5-(alkyltetrazole-5-yl)-benzaldehyde by reacting a 5-(4-alkoxyphenyl)-alkyl-tetrazole with hexamethylenetetramine in a sulfonic acid solvent, followed by hydrolysis; and a method for preparing 2-alkoxy-5-(tetrazole-2-yl)-benzaldehyde compounds by reacting 2-(4-alkoxyphenyl)-2H-tetrazole compounds with hexamethylenetetramine in a sulfonic acid solvent, followed by hydrolysis.