Synthesis 2016; 48(18): 3134-3140
DOI: 10.1055/s-0035-1562133
paper
© Georg Thieme Verlag Stuttgart · New York

(Hex-2-en-ylidene)-N-Substituted Hydrazinecarbothioamides and 2,3-Dichloro-1,4-naphthoquinone: Nucleophilic Substitution Reactions and Synthesis of Naphtho[2,3-f][1,3,4]thiadiazepines and Naphtho[2,3-d]thiazoles

Alaa A. Hassan*
a   Chemistry Department, Faculty of Science, Minia University, 61519 El-Minia, Egypt   Email: alaahassan2001@mu.edu.eg
,
Nasr K. Mohamed
a   Chemistry Department, Faculty of Science, Minia University, 61519 El-Minia, Egypt   Email: alaahassan2001@mu.edu.eg
,
Maysa M. Makhlouf
a   Chemistry Department, Faculty of Science, Minia University, 61519 El-Minia, Egypt   Email: alaahassan2001@mu.edu.eg
,
Stefan Bräse
b   Institute of Organic Chemistry, Karlsruhe Institute of Technology, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
,
Martin Nieger
c   Laboratory of Inorganic Chemistry, Department of Chemistry, University of Helsinki, P.O. Box 55 (A. I. Virtasenaukio I), 00014 Helsinki, Finland
,
Henning Hopf
d   Institut für Organische Chemie, Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
› Author Affiliations
Further Information

Publication History

Received: 19 January 2016

Accepted after revision: 29 March 2016

Publication Date:
10 May 2016 (online)


Abstract

The coupling reaction between N-substituted (E)-hex-2-en-ylidene hydrazinecarbothioamides and 2,3-dichloro-1,4-naphthoquinone affords substituted amino-5-pentenyl-naphtho[2,3-f]-1,3,4-thiadiazepine-6,11-diones and 2-(substituted amino)naphtho[2,3-d]thiazole-4,9-diones. These conversions can be rationalized by proposing a nucleophilic addition to C2 and C3 of dichloro-1,4-naphthoquinone. The structure of one of the products was confirmed by single-crystal X-ray analysis.

Supporting Information