The title compounds (2a-d), representing α,β-didehydroalanine derivatives and reactive equivalents of pyruvic acid, have been obtained by the reaction of methyl or tert-butyl pyruvate with dimethylamine, piperidine or morpholine in the presence of arsenous trichloride. The synthesis of dimethyl 2,4-dioxopentanedioate is given as an example of the versatile reactivity of these compounds.
在
三氯化砷存在下,
丙酮酸甲酯或叔丁酯与
二甲胺、
哌啶或吗啉反应,可得到代表δ,δ²-二脱氢丙
氨酸衍
生物和
丙酮酸活性等价物的标题化合物(2a-d)。以 2,4-二氧
戊二酸二甲酯的合成为例,说明了这些化合物的多功能反应性。