Tandem transformations of tetrahydrobenzothieno[2,3-c]pyridines in the presence of activated alkynes
摘要:
The reactivity of some new tetrahydrothienopyridines towards activated alkynes was investigated. A novel cascade cleavage-spiroannulation process, leading to the formation of previously unreported derivatives of 1'H-spiro[1-benzothiophene-3,4'-pyridine] was discovered and studied. (C) 2010 Elsevier Ltd. All rights reserved.