The Rodionov reaction of 49 available aliphatic and aromatic aldehydes with malonic acid and ammonium acetate in alcoholic medium, resulting in formation of β-amino acids, propenoic, and ylidenemalonic acids, was studied. Certain regioselectivity regularities of the reaction were revealed. Among the variety of ketones studied, cyclohexanone is the only whose reaction yields a β-amino acid. Unusual dehydrofluorination of 6-chloro-2-fluorocinnamic acid under the Rodionov reaction was discovered.
在醇介质中,利用49种可获得的脂肪醛和芳香醛与
丙二酸和
醋酸铵进行Rodionov反应,结果形成了β-
氨基酸、
丙烯酸和亚
甲基丙二酸。研究揭示了该反应的某些区域选择性规律。在多种研究的酮中,仅有
环己酮的反应产物为β-
氨基酸。在Rodionov反应条件下,6-
氯-
2-氟肉桂酸的异常脱
氟现象被发现。