[1]Arnold;Bordwell[JournaloftheAmericanChemicalSociety,1942,vol.64,p.2983,2985]
[1]Balsigeretal.[HelveticaChimicaActa,1953,vol.36,p.708,711]
[1]Slooff[RecueildesTravauxChimiquesdesPays-Bas,1935,vol.54,p.995,999]
[1]Balsigeretal.[HelveticaChimicaActa,1953,vol.36,p.708,711]
[2]Arnold;Bordwell[JournaloftheAmericanChemicalSociety,1942,vol.64,p.2983,2985]
[3]Slooff[RecueildesTravauxChimiquesdesPays-Bas,1935,vol.54,p.995,999]
[4]Cole,EdwardR.;Crank,George;Minh,H.T.Hai[AustralianJournalofChemistry,1980,vol.33,#3,p.675-680]
[5]Neiland,O.Ya.;Kraupsha,I.L.;Gudele,I.Ya.[ChemistryofHeterocyclicCompounds,1993,vol.29,#12,p.1428-1434][KhimiyaGeterotsiklicheskikhSoedinenii,1993,#12,p.1653-1661]
[6]CurrentPatentAssignee:MERCK&COINC-US4000286,1976,A
[1]Cole,EdwardR.;Crank,George;Minh,H.T.Hai[AustralianJournalofChemistry,1980,vol.33,#3,p.675-680]
[2]Slooff[RecueildesTravauxChimiquesdesPays-Bas,1935,vol.54,p.995,999]