名称:
Synthesis of terpenes containing the bicyclo[3.1.1]heptane ring system by the intramolecular [2 + 2] cycloaddition reaction of vinylketenes with alkenes. Preparation of chrysanthenone, .beta.-pinene, .beta.-cis-bergamotene, .beta.-trans-bergamotene, .beta.-copaene, and .beta.-ylangene and lemnalol