Amides reacted with primary alcohols in the presence of a catalytic amount of RuCl2(PPh3)3 at 180 °C to give the corresponding N-monoalkyl amides in fairly good yields. Thus, benzamide reacted with 1-octanol to give N-octylbenzamide in 76% yield with excellent product selectivity. Little esterification of amides with alcohols occurred and selectivity to the N-alkylation was high. Most of the amides gave N-monoalkyl amides but no N,N-dialkyl amides. But formamide reacted with 1-butanol to give N,N-dibutylformamide, as well as N-butylformamide, in low yield. RuCl2(PPh3)3 was the most effective catalyst for this reaction and RuHCl(PPh3)3 also had some catalytic activity.
在180°C下,酰胺与伯醇在催化量的RuCl2(PPh3)3存在下反应,得到相应的一烷基化酰胺,产率相当好。因此,苯甲酰胺与1-
辛醇反应,以76%的产率得到N-辛基苯甲酰胺,且产品选择性极佳。酰胺与醇的酯化反应很少发生,N-烷基化的选择性很高。大多数酰胺得到的是一烷基化酰胺,而不是N,N-二烷基化酰胺。但甲酰胺与
1-丁醇反应,以低产率生成N,N-二丁基甲酰胺以及N-丁基甲酰胺。RuCl2(PPh3)3是该反应最有效的催化剂,而RuHCl(PPh3)3也具有一定的催化活性。