Efficient synthesis of novel bis(dihydropyrano[2,3c]pyrazoles), bis(4H-chromenes) and bis(dihydropyrano[3,2-c]chromenes) with amide functionality
作者:Amna M. Abdella、Amr M. Abdelmoniem、Holger Butenschön、Ismail A. Abdelhamid、Ahmed H. M. Elwahy
DOI:10.24820/ark.5550190.p011.071
日期:——
A synthesis of novel bis(1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitriles), bis(4H-chromene-3-carbonitriles) and bis(dihydropyrano[3,2-c]chromenes), which are linked to aliphatic spacers via amide linkages was achieved via multicomponent reactions (MCR) of the appropriate bis-aldehyde with two equivalents of both of malononitrile and 3-methylpyrazol-5-one, dimedone or 4-hydroxycoumarin in a basic solution
合成新型双(1,4-二氢吡喃并[2,3-c]吡唑-5-腈)、双(4H-色烯-3-腈)和双(二氢吡喃并[3,2-c]色烯),其中通过酰胺键连接到脂肪族间隔基是通过适当的双醛与两当量的丙二腈和 3-甲基吡唑-5-酮、二甲酮或 4-羟基香豆素在碱性溶液中的多组分反应 (MCR) 实现的。