A Mild and Efficient Method for the Deformylation of 5-Formyl Uracils and Synthesis of 4,4′-Methylidenebis(1-phenyl-3-methyl-5-pyrazolone)
作者:Pulak Bhuyan、Mohit Deb、Swarup Majumder
DOI:10.1055/s-0029-1217536
日期:2009.7
6-Substituted 5-formyl uracils undergo an interesting reaction with 1-phenyl-3-methyl-5-pyrazolone in the presence of base catalyst to afford deformylated uracils and 4,4′-methylidenebis(1-phenyl-3-methyl-5-pyrazolone) in excellent yields.
Synthesis of some novel annulated pyrido[2,3-<i>d</i>]pyrimidines via stereoselective intramolecular hetero Diels–Alder reactions of 1-oxa-1,3-butadienes
作者:Mohit L Deb、Pulak J Bhuyan
DOI:10.3762/bjoc.6.11
日期:——
Somenovel annulated pyrido[2,3-d]pyrimidines 6 and 7 were synthesized stereoselectively by intramolecular hetero Diels-Alder reactions involving 1-oxa-1,3-butadienes.