Synthesis 2004(15): 2555-2559  
DOI: 10.1055/s-2004-831199
PAPER
© Georg Thieme Verlag Stuttgart · New York

Lithiation of a Pyrrolo-Annulated Tetrathiafulvalene

Bo M. Petersen, Jan O. Jeppesen*, Jan Becher
Department of Chemistry, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
Fax: +45(66)158780; e-Mail: joj@chem.sdu.dk;
Further Information

Publication History

Received 3 June 2004
Publication Date:
26 August 2004 (online)

Abstract

Mono- and bis-lithiations of N-tosyl monopyrrolo­tetrathiafulvalene provide novel methods for the introduction of substituents, such as alkyl and halogens, into the 4- and 6-positions of monopyrrolotetrathiafulvalenes.

2

Jeppesen, J. O.; Nielsen, M. B.: Becher, J. Chem. Rev. 2004, in press.

14

Other lithium bases, such as n-BuLi and tert-BuLi were also tested. However, addition of n-BuLi or tert-BuLi to a solution of 3 caused detosylation producing the unprotected MPTTF derivative.13a

20

1H NMR spectroscopy revealed that the isolated product contained ca. 5% of 3.