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在乙醇溶液中具有烯醇醚结构的3-乙酰基-4-甲氧基-2-丁烯内酯和3-(1-甲氧基亚乙基)-4-羰基-2-丁内酯与不同的胺类衍生物发生区域选择性加成-消除反应生成一系列新的稳定的烯胺酮结构衍生物.它们的化学结构经~1H NMR、~(13)C NMR、X射线衍射和高分辨质谱的确证.其中生成的3-(1-胺基亚乙基)-4-氧代-2-丁内酯类化合物存在明显的Z/E两种异构体.同时对制备反应中产生的副产物结构也进行了确证.
3-acetyl-4-methoxy-2-butenyl lactone having an enol ether structure in ethanol solution and 3- (1-methoxyethylidene) -4-carbonyl- A series of new stable enaminone derivatives were obtained by regioselective addition-elimination reactions with different amine derivatives. Their chemical structures were confirmed by ~ 1H NMR, ~ (13) C NMR, X-ray diffraction and The confirmation of high-resolution mass spectrometry confirmed that there are two obvious Z / E isomers of 3- (1-aminoethylidene) -4-oxo-2-butyrolactone compounds generated during the preparation reaction The resulting byproduct structure is also confirmed.