Synlett 2011(12): 1786-1787  
DOI: 10.1055/s-0030-1260937
SPOTLIGHT
© Georg Thieme Verlag Stuttgart ˙ New York

Elemental Sulfur: A Simple, Economic, and Versatile Reagent

Josué Sebastián Bello Forero*
Departamento de Química Orgânica, Instituto de Química, Universidade Federal do Rio de Janeiro, Avenida Athos da Silveira Ramos 149, Centro de Tecnologia, Bloco A, 6 Andar, Ilha do Fundão, 21 941-909 Rio de Janeiro, Brazil
e-Mail: jsebastianbello@yahoo.es;
Further Information

Publication History

Publication Date:
05 July 2011 (online)

Introduction

Elemental sulfur is a paled yellow, odorless and brittle solid, which is insoluble in water, but soluble in CS2. [¹] It is very inexpensive and easy available, because of its abundance in many naturals’ sources (petroleum crude, minerals, etc.). [²] Elemental sulfur appears in several allotropic forms: octahedral, rhombic or α-sulfur, monoclinic, prismatic or β-sulfur. [¹] Both the rhombic and monoclinic forms are made up of eight sulfur atoms arranged in a puckered structure. Literature reveals that S8 has been extensively used in numerous organic transformations, including synthesis of mercaptopurines, [³] oxazolidinones, [4] aminothiophenes, [5] reduction of nitroarenes, [6] and as oxidation agents. [7] These and some other applications are described below.

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