e.g. Filippa Pettersson or Cancer Res. 75(6) , 1102-12, (2015) or 10.1002/anie.201600521
Journal of Heterocyclic Chemistry
Chemistry of thienopyridines. XIII. Selective formation of sulfones in Bi??and tricyclic Systems. Thieno [2, 3??b] pyridine 1, 1??dioxide as a dienophile
LH Klemm, RE Merrill
Index: Klemm,L.H.; Merrill,R.E. Journal of Heterocyclic Chemistry, 1972 , vol. 9, p. 293 - 298
Abstract Bicyclic and tricyclic thienopyridines are converted into sulfones in 13-73% yield by means of acid-hypochlorite. The sulfone thieno [2, 3-b] pyridine 1, 1-oxide (Ib) undergoes Diels-Alder condensation with furan (both exo and endo products formed), anthracene, and naphthacene. Self-condensation of Ib occurs with elimination of sulfur dioxide to give 8-(3- pyridyl) quinoline (XV). The structure of XV was established by means of pmr and a ...
![[1]Benzothieno[2,3-b]pyridine Structure](https://image.chemsrc.com/caspic/333/244-93-9.png)
![[1]benzothiolo[2,3-b]pyridine 9,9-dioxide Structure](https://image.chemsrc.com/caspic/475/37049-42-6.png)
![[1]Benzothieno[3,2-b]pyridine Structure](https://image.chemsrc.com/caspic/117/318-69-4.png)
![[1]benzothiolo[3,2-b]pyridine 5,5-dioxide Structure](https://image.chemsrc.com/caspic/107/34898-62-9.png)