1,3-(4,4′-bipyridinium disulfonic acid) propane-dihydrogen sulfate as highly effectual bi-functional catalysts for the rapid preparing chromeno[4,3-b]chromenes and pyrido[2,3-d:6,5-d′]dipyrimidines
Titel:
1,3-(4,4′-bipyridinium disulfonic acid) propane-dihydrogen sulfate as highly effectual bi-functional catalysts for the rapid preparing chromeno[4,3-b]chromenes and pyrido[2,3-d:6,5-d′]dipyrimidines
Auteur:
Altoum, Abdelgadir Saleh, Ebraheem Abdu Musad Kareem, Anaheed Hussein Shahab, Sana Deorari, Maha Medha Bokov, Dmitry Olgovich Altimari, Usama S. Shaghnab, Murtadha Laftah Alawadi, Ahmed Alsalamy, Ali