Synthesis 2008(20): 3307-3313  
DOI: 10.1055/s-0028-1083148
PAPER
© Georg Thieme Verlag Stuttgart ˙ New York

Thallium(III) Chloride: A Mild and Efficient Catalyst for Acylation of Alcohols, Phenols and Thiols, and for Geminal Diacylation of Aldehydes under Solvent-Free Conditions

Santosh T. Kadam, Sung Soo Kim*
Department of Chemistry, Inha University, Incheon 402-751, Korea
Fax: +82(32)8675604; e-Mail: sungsoo@inha.ac.kr;
Further Information

Publication History

Received 7 May 2008
Publication Date:
25 September 2008 (online)

Abstract

Thallium(III) chloride is a simple and efficient catalyst for acylation of alcohols, phenols and thiols. It is also very effective for geminal diacylation of aldehydes. The acylation reaction using acetic anhydride proceeds in excellent yield in the presence of catalytic amounts of thallium(III) chloride (1 mol%) at room temperature within relatively short reaction times (<20 min). Structurally diverse alcohols, phenols, thiols and aldehydes undergo acylation under solvent-free conditions.