The deoxydative substitution reactions of nicotinamide and nicotinic acid<i>N</i>-oxides by 1-adamantanethiol in acetic anhydride
作者:Supaluk Prachayasittikul、Ludwig Bauer
DOI:10.1002/jhet.5570220332
日期:1985.5
The reaction of nicotinamide N-oxide with 1-adamantanethiol in acetic anhydride yielded a mixture of 2-and 6-(1-adamantylthio)nicotinamides (49%, in the ratio of 24:1) and 2-, 5-, and 6-(1-adamantylthio)nicotino-nitriles (18%, in the ratio of 79:1:20). From a reaction of nicotinic acid N-oxide with 1-adamantanethiol, there was isolated 2-(1-adamantylthio)nicotinic acid as the only sulfide in 23% yield
烟酰胺N-氧化物与1-金刚烷硫醇在乙酸酐中的反应生成2-和6-(1-金刚烷硫基)烟酰胺(49%,比例为24:1)和2-,5-和6的混合物-(1-金刚烷硫基)烟腈(18%,比率为79:1:20)。从烟酸N-氧化物与1-金刚烷硫醇的反应中,分离出2-(1-金刚烷硫基)烟酸作为唯一的硫化物,产率为23%。当将2-(1-金刚烷硫基)烟酸或相应的酰胺或腈与浓盐酸煮沸以定量提供2-巯基烟酸和1-氯金刚烷时,发生碳硫键断裂。烟酰胺N-氧化物单独在135° C的乙酸酐中反应形成N-乙酰基-2-羟基烟酰胺(61%),2-羟基烟腈(0.5%)和N,N-二乙酰基-2-乙酰氧基烟酰胺(0.8%)。