Competitive Formation of β-Amino Acids, Propenoic, and Ylidenemalonic Acids by the Rodionov Reaction from Malonic Acid, Aldehydes, and Ammonium Acetate in Alcoholic Medium
作者:A. V. Lebedev、A. B. Lebedeva、V. D. Sheludyakov、E. A. Kovaleva、O. L. Ustinova、I. B. Kozhevnikov
DOI:10.1007/s11176-005-0377-9
日期:2005.7
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。