Abstract Cycloaddition of 2-|(N-phenyl)thiocarboxamido-|-4-methyl-2H,4-benzoxazin-3-one (2) to α,β-unsaturated compounds gave spiro pyridine derivatives. Reaction of compound 2 with some halo compounds afforded thiazolidine derivatives. 2-Ethoxymethylenyl-4-methyl-l.4-benzoxazine-3-thione underwent cyclocondensation reactions with some bidentate reagents. Condensed tricyclic systems have been prepared
摘要 2-|(N-苯基)
硫代甲酰
氨基-|-4-甲基-2H,4-benzoxazin-3-one (2)与α,β-不饱和化合物环加成得到螺
吡啶衍生物。化合物2与一些卤素化合物反应得到
噻唑烷衍
生物。2-乙氧基亚甲基-4-甲基-1.4-苯并恶嗪-3-
硫酮与一些二齿试剂发生环缩合反应。稠合
三环系统已通过 3-二
氰基亚乙基-4-甲基-2H-1,4-苯并恶嗪与合适的试剂反应制备。