Reactions of bridgehead halides. A synthesis of modhephene, isomodhephene, and epi-modhephene
A Synthesis of modhephene has been achieved, the key feature of which is the use of a novel nucleophilic addition/rearrangement reaction to develop the carbon framework. Stereochemical control of the stereogenic center bearing the methyl group was accomplished by variation of the hydrogenation conditions. As a byproduct of this work, we have clarified structural assignments of intermediates from previous syntheses.