Abstract
Reactions of 2-methylcyclohexanone and menthone with tetracyanoethylene gave 2-(1,1,2,2-tetracyanoethyl)cyclohexanones which underwent quantitative transformation in the solid phase into 3,4-cyanosubstituted 2-aminopyrans in 2-3 days at room temperature. 2-Methyl-2-(1,1,2,2-tetracyanoethyl)cyclohexanone reacted with hydroiodic acid to afford 8a-hydroxy-2-iodo-4a-methyl-1,4,4a,5,6,7,8,8a-octahydroquinoline-3,4,4-tricarbonitrile. The reaction of 2,2'-methylenedi(cyclohexanone) with tetracyanoethylene resulted in formation of 7-imino-4,5-tetramethylene-2'-oxo-6-oxabicyclo[3.2.1]octane-2-spiro-1'-cyclohexane-1,8,8-tricarbonitrile.
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