3-Amino-2,3-dihydro-1H-benzo[f]chromenes and 2-[(2-hydroxynaphthalen-1-yl)methyl]-2,3-dihydro-1H-benzo[f]chromene-2-carbonitriles were obtained via the reaction of naphthalen-2-ol Mannich bases with β-aminoacrylonitriles and methyl 3-morpholinoacrylate as products of [4+2] cycloaddition of push-pull olefins to the corresponding 1,2-naphthoquinone 1-methide. The reaction of 3-amino-3-phenylacrylonitrile with Mannich bases leads to the formation of 1,4-dihydropyridine-3,5-dicarbonitriles.

中文翻译：

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萘-2-醇曼尼希碱与β-氨基丙烯腈和3-吗啉代丙烯酸甲酯的反应

3-氨基-2,3-二氢-1 H-苯并[ f ]色烯和2-[（（2-羟基萘-1-基）甲基] -2,3-二氢-1 H-苯并[ f ]色烯-2通过萘-2-醇曼尼希碱与β-氨基丙烯腈和3-吗啉代丙烯酸甲酯的反应得到β-腈，β-氨基丙烯腈是推挽式烯烃[4 + 2]环加成到相应的1,2-萘醌1-甲基化物的产物。3-氨基-3-苯基丙烯腈与曼尼希碱的反应导致形成1,4-二氢吡啶-3,5-二碳腈。