Reactions of cycloalkyl chlorides and bromides with diphenylphosphide ions in liquid ammonia
作者:M�nica A. Nazareno、Sara M. Palacios、Roberto A. Rossi
DOI:10.1002/poc.610060707
日期:1993.7
The reactions of cycloalkyl (butyl, pentyl, hexyl and heptyl) chlorides and bromides with diphenylphosphide ions were studied in liquid ammonia. Cyclobutyl chloride was unreactive, whereas the bromide reacted giving the substitution product cyclobutyldiphenylphosphine (isolated as the oxide) in good yields; this reaction was catalysed by light and partially inhibited by p-dinitrobenzene (p-DNB). Cyclopentyl
在液态氨中研究了环烷基(丁基,戊基,己基和庚基)氯化物和溴化物与二苯基磷化物离子的反应。环丁基氯是不活泼的,而溴化物反应生成的取代产物环丁基二苯基膦(氧化物分离),收率很高。该反应被光催化,部分被对二硝基苯(p -DNB)抑制。环戊基氯,环己基氯和环庚基氯在黑暗中不反应,但是在辐射下形成取代产物,并且这些反应被p -DNB抑制。溴化物在黑暗中或在辐射下反应,这些反应被p部分抑制。-DNB。然后可以得出结论,环烷基卤化物的反应性取决于环的大小和核真菌基团。另外,随着总反应性降低,电子转移反应增加。