Reactions of fluoroalkyl-containing lithium 1,3-diketonates with amines or ammonium salts in glacial acetic acid or methanol at 20°C provide an efficient synthetic route to fluoroalkyl-containing β-amino-vinyl ketones. Depending on the conditions, reactions of lithium diketonates with 1-aminonaphthalene lead to formation of both β-aminovinyl ketones and cyclocondensation products, benzo[h]quinolines. The latter can be obtained in one step without isolation of β-aminovinyl ketones.
在 20°C 的
冰醋酸或
甲醇中,含氟烷基的 1,3-二
酮酸锂与胺或
铵盐的反应为含氟烷基的 β-
氨基
乙烯酮提供了一条有效的合成途径。根据不同的条件,二
酮酸锂与 1-aminonaphthalene 反应可生成 β-
氨基
乙烯酮和环缩合产物苯并[h]
喹啉。后者可在不分离 β-
氨基
乙烯酮的情况下一步获得。