The rates of deuterium-protium exchange have been determined for o-, m- and p-deuterated fluorobenzene, benzotri-fluoride and anisole in liquid ammonia solution in the presence of potassium amide. The exchange rates were found to be greatest for the ortho compounds and smallest for the para compounds. Deuterobenzene and o-deuterotoluene reacted too slowly for convenient measurement. The results are
已经确定了在
氨化
钾存在下在液
氨溶液中邻、间和对
氘化
氟苯、三
氟苯和
苯甲醚的
氘-氚交换率。发现邻位化合物的交换率最大,而对位化合物的交换率最小。
氘代苯和邻
氘代甲苯反应太慢,无法方便测量。根据取代基的综合感应和场效应的操作来解释结果,介观效应似乎不太重要。