作者:Petro P. Onys’ko、Denys V. Klukovsky、Andrii V. Bezdudny、Volodymyr V. Pirozhenko、Yurii M. Pustovit、Anatoly D. Synytsya
DOI:10.1080/10426507.2014.905576
日期:2014.8.3
Abstract A convenient synthetic approach for previously unknown N-(R-cyclopropyl)trifluoroacetimidoyl phosphonates 5a,b (R˭H, CF3) was developed on the basis of the reaction of respective trifluoroacetimidoyl chlorides with triethyl phosphite. It was shown that imidoyl phosphonates 5a,b exist as equilibrium mixture of Z/E isomers (Z:E ∼92:8). Activation parameters of Z–E isomerization were evaluated
摘要 基于各自的三氟乙酰亚胺酰氯与亚磷酸三乙酯反应,开发了一种方便的合成方法,用于合成以前未知的 N-(R-环丙基)三氟乙酰亚胺酰基膦酸酯 5a,b (R˭H, CF3)。结果表明,亚氨基膦酸酯 5a、b 以 Z/E 异构体的平衡混合物形式存在(Z:E ~92:8)。Z-E 异构化的活化参数通过 19F NMR 光谱进行评估。5a,b 的催化氢化可作为合成具有刚性 N-环丙基的三氟乙基氨基膦酸酯的便捷方法。图形概要