Generation of the First
Tellurium-Containing Diheteropentalene
Desikan Rajagopal,M. V. Lakshmikantham,Eva H. Mrkved, and
Michael P. Cava*
Chemistry Department, University of Alabama, P.O. Box 870336,
Tuscaloosa, Alabama 35487-0336
mcava@bama.ua.edu
Received January 30, 2002
Abstract:
The known diester dibromomethylthiophene was converted to the tellurolo[3,4-c]thiphene, the first example of a diheteropentalene containing
a tellurophene annelated across the 3,4-c position to thiophene. It is stable in solution and adds to DMAD across the 2,5-positions in tellurophene.
The intermediate loses tellurium and collapses to a tetracarbomethoxy benzo[c]thiophene derivative.
rkved,
and
