Nuclear magnetic resonance study of tricrotonylidenetetramine (1,2,3,3a,4,5,6,6a,7,8,9,9a-dodecahydro-2,5,8-trimethyl-1,4,7,96-tetra-azaphenalene)
Abstract
The less soluble isomer of 1,2,3,3a,4,5,6,6a,7,8,9,9a-dodecahydro-2,5,8-trimethyl-1,4,7,96-tetra-azaphenalene has trans-fused rings in chair forms with all methyl groups in equatorial positions. The more soluble isomer has one methyl group in an axial position.