Transformations of 2-(3-Hydroxy-3-methyl-1-butynyl)adamantan-2-ol >Catalyzed by Acids
作者:S. S. Koval'skaya、N. G. Kozlov、E. A. Dikusar
DOI:10.1023/b:rujo.0000043712.63729.6e
日期:2004.5
Reaction of 2-(3-hydroxy-3-methyl-1-butynyl)adamantan-2-ol with acetonitrile under Ritter reaction conditions is accompanied by isomerization and partial hydration where the water addition to the triple bond occurs nonselectively. As a result of reaction carried out in the presence of 8 equiv of sulfuric acid a mixture was obtained of N-2-[4-(1-acetylaniino-2-adamantyl)-2-methyl-3-butyn-2-yl]acetamide, N-3-[1-(1-acetylamino-2-adarnantyl)-3-methyl-2-oxo-3-butyl]-acetamide, and N-3-[1-(1-acetylamino-2-adamantyl)-3-methyl-1-oxo-3)-butyl]acetamide in similar to10:3:2 ratio. In the presence of 2 equiv of the acid the mixture obtained consisted of N-2-[4-(1-acetylamino-2-adamantyl)-2-methyl-3-butyn-2-yl]acetamide, N-3-[1-(1-acetylamino-2-adamantyl)-3-methyl-2-oxo-3-butyl]acetamide, and 1-(acetylamino-2-adamantyl)-3-methyl-2-buten-1-one in the same ratio. In Rupe reaction conditions we obtained instead of the expected alpha, beta-unsaturated ketones a mixture of 1-(1-hydroxy-2-adamantyl)-3-hydroxy-3-methylbutan-1-one and 1-(1-hydroxy-2-adamantyl)-3-hydroxy-3-methylbutan-2-one in a 5:3 ratio.