Synthesis Corey’s longifolene

Selectivity between secondary and tertiary alcohols by reagent Corey s longifolene synthesis Chemoselectivity in Enol and Enolate Formation... 

For example, in Corey s longifolene synthesis it was necessary to remove one ketone in the presence of another as shown below. Normally this would require protecting the ketone which is to remain. Both ketones are saturated, but they differ in steric environment. The total congestions calculated by SECS indicate that the ketone which is to remain is already protected by the... 

Longifolene synthesis E. J. Corey, R. B. Mitra, and P. A. Vatakencherry Longifolene synthesis J. E. McMurry and S. J. Isser Retrosynthetic analysis corresponding to synthesis in Scheme 13.19 Longifolene synthesis R. A. Volkmann, G. C. Andrews, and W. S. Johnson... 

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