A new series of β-enaminocarboxamide was synthesized via the addition of chlorosulfonyl isocyanate to β-enaminones. The prepared intermediates were converted to corresponding β-enaminocarboxamides by removal of the chlorosulfonyl group using methanol. The resulting compounds were obtained in excellent yields in the range of (80–92%) and were characterized by 1H, 13C, HMBC, HSQC NMR spectroscopy, and
通过在β-烯胺酮上加成
氯磺酰异氰酸酯合成了一系列新的β-烯
氨基甲酰胺。通过使用
甲醇去除
氯磺酰基,将制备的中间体转化为相应的 β-烯胺甲酰胺。所得化合物以 (80–92%) 范围内的优异产率获得,并通过1 H、13 C、HMBC、HSQC NMR 光谱、IR 光谱以及元素分析进行表征。1 H-NMR 谱显示伯酰胺质子的非等价性,这是由于氢键。β-烯
氨基甲酰胺5h以晶体形式获得,并进行 X 射线分析。结果表明,5h在具有 C2/c 空间群的单斜晶系中结晶,OR
TEP 证实了分子内氢键的存在。