Synthesis 2022(9): 1520-1524  
DOI: 10.1055/s-0028-1088035
PAPER
© Georg Thieme Verlag Stuttgart ˙ New York

Iron(III) Chloride: A Versatile Catalyst for the Practical Synthesis of 3-Sulfenylindoles

Jhillu S. Yadav*, Basi V. Subba Reddy, Yerabolu Jayasudhan Reddy, Karanam Praneeth
Division of Organic Chemistry, Indian Institute of Chemical Technology, Hyderabad 500007, India
Fax: +91(40)27160512; e-Mail: yadavpub@iict.res.in;
Further Information

Publication History

Received 15 December 2008
Publication Date:
25 March 2009 (online)

Abstract

The direct sulfenylation of indoles with aromatic thiols has been accomplished in the presence of 20 mol% of FeCl3 in refluxing acetonitrile to produce 3-arylthioindoles in relatively good to excellent yields and with high selectivity. This method works even with 2-unsubstituted indoles.