654664-81-0Relevant articles and documents
Synthesis of pyrido and pyrazinodithienodipyrimidine-4,8(3H,9H)-dione derivatives by the aza-Wittig methodology
Vázquez Vilarelle, David,Peinador Veira, Carlos,Quintela López, José M.
, p. 275 - 283 (2007/10/03)
A one-pot synthesis of the hitherto unreported pyrido[5″,6″:4, 5;3″2″:4′,5′]dithieno[3,2-d:3′,2′-d′] dipyrimidine-4,8(3H,9H)-dione 6a-o and pyrazino[5″,6″:4, 5;3″2″:4′,5′]dithieno[3,2-d:3′,2′-d′] dipyrimidine-4,8(3H,9H)-dione 6p-y pentaheterocyclic systems, based on the tandem aza-Wittig heterocumulene-mediated annulation strategy is described.