Reactivity of p-bromophenyl vinyl sulphone towards the morpholine enamine from 4a-methyl-trans-decalin-2-one. Crystal and molecular structure of 1α-(2-p-bromophenylsulphonylethyl)-4a-methyl-2-morpholino-Δ2-trans-octalin

Abstract

The morpholine enamine from 4a-methyl-trans-decalin-2-one reacts with p-bromophenyl vinyl sulphone when heated under reflux in dioxan to give a mixture of 1α- and 3-(2-p-bromophenylsulphonylethyl)-2-morpholino-Δ²-trans-octalin [(6) and (3) respectively]. The structure of (6) was determined by X-ray analysis, while that of (3) was assigned on the basis of spectroscopic properties and chemical behaviour. A possible pathway for the formation of the two enamine derivatives is discussed. The crystal structure was determined by the heavy-atom method from diffractometer data and refined by least squares to R 0.094 for 2 260 independent reflections.