936224-24-7Relevant articles and documents
Synthesis of 6H-thieno[3,2-b]pyridin-7-ones from N-(2-X-Carbonyl)-3-thienyl ketenimines (X = RS, ArO, R2N) via consecutive [1,5]-X sigmatropic rearrangement and 6π-electrocyclization
Alajarin, Mateo,Vidal, Angel,Ortin, Maria-Mar
, p. 590 - 596 (2007/12/25)
N-(2-X-Carbonyl)-3-thienyl ketenimines (X = RS, ArO, R2N) undergo cyclization under thermal conditions, through a [1,5]-X sigmatropic rearrangement followed by a 6π-electrocyclic ring closure of the resulting intermediate ketene, to provide 6H-thieno[3,2-b]pyridin-7-ones, bearing alkylthio, arylthio, aryloxy or amino groups at their 5-position. Georg Thieme Verlag Stuttgart.