Title:5-Aminotetrazoles – An Overview of Synthetic Methodologies through the
Desulfurization of Thioureas
Volume: 27
Issue: 15
Author(s): Adriana Marques Moraes, Tiago Lima da Silva and Marcio C.S. de Mattos*
Affiliation:
- Departamento de Química Orgânica, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21945-970,
Brazil
Keywords:
Organic synthesis, azidation, carbodiimide, oxidation, isothiourea, guanyl azide.
Abstract: Tetrazoles are important heterocycles in diverse branches of chemistry. Among the 5-substituted tetrazoles,
the 5-amino derivatives are the most important by far as they show high chemical versatility and relevant
applications in material chemistry, catalysis, agrochemistry, etc. Particularly in medicinal chemistry, they
present a wide range of pharmacological properties. In the present review, we focus on the synthesis of 5-
aminotetrazol from the desulfurization processes of thioureas using metal salts, hypervalent iodine compounds
and halogenated reagents.