An Alternative Synthysis of Thieno[3,4-b]Thiophene
- 1 August 1990
- journal article
- research article
- Published by Taylor & Francis in Synthetic Communications
- Vol. 20 (15) , 2275-2277
- https://doi.org/10.1080/00397919008053169
Abstract
Thieno[3,4-b]thiophene has been obtained in greater than 50% yield starting from 3,4-dibromothiophene by a sequence of PdII-CuI-catalysed cross-coupling with trimethylsilylacetylene, bromine-lithium exchange, thiolation with elemental sulfur and ring-closure in aqueous medium.Keywords
This publication has 1 reference indexed in Scilit:
- Thieno[3,4-b]thiophene. The third thiophtheneTetrahedron Letters, 1967