Studies in the enamine field—XXX: Autocondensation products of 2-(methylanilino)-propene: 1-(2, 2, 6, 6-tetramethyl-4-oxo-cyclohexyl)-5, 5-dimethylcyclohexene-3- …

D Pocar, R Stradi, P Dalla Croce, G Bianchetti

Index: Pocar,D. et al. Tetrahedron, 1968 , vol. 24, p. 6741 - 6745

Full Text: HTML

Citation Number: 2

Abstract

In the reaction between acetone diethyl ketal and N-methylanilie the main products 2, 2, 8, 8- tetramethyl-spiro-[5.5]-undecane-4, 10-dione (I) and six by-products were isolated and identified. Of these the most interesting is 1-(2, 2, 6, 6-tetramethyl-4-oxo-cyclohexyl)-5, 5- dimethylcyclohexene-3-one (IV) the structure of which was based on chemical and spectroscopic evidence. It was cyclized by alkali to 1-hydroxy-5, 5, 9, 9, 11, 11- ...