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The Ullmann coupling reaction between the 2-trifluoroacetamido-3-iodo-6-ben
zoylimididazo[1,2-a]pyridine and dialkyldisulfides (Me, Pr-i) mediated by c
opper bronze in pyridine, resulted in a novel and highly efficient method f
or the incorporation of alkylthiol groups at C-3 of this type of heterocycl
ic system. (C) 1998 Elsevier Science Ltd. All rights reserved.