78217-45-5

Upstream product

• 22748-16-9 4,4-dimethylcyclopent-2-ene-1-one 

Downstream Products

• 83588-32-3 (4aS,5R,6aR,7R,9aR)-7-Allyl-5-hydroxy-8,8-dimethyl-octahydro-pentaleno[1,6a-c]pyran-2-one 
• 78217-46-6 7-allyl-5-(benzyloxy)octahydro-8,8-dimethylpentaleno<1,6a-c>pyran-2(1H)-one 
• 83588-35-6 5-(benzyloxy)octahydro-7-(2-hydroxyethyl)-8,8-dimethylpentaleno<1,6a-c>pyran-2(1H)-one p-toluenesulfonate 
• 83588-40-3 Toluene-4-sulfonic acid 2-((4aS,6aR,7R,9aR)-8,8-dimethyl-2,5-dioxo-decahydro-pentaleno[1,6a-c]pyran-7-yl)-ethyl ester 
• 83588-34-5 5-(benzyloxy)octahydro-7-(2-hydroxyethyl)-8,8-dimethylpentaleno<1,6a-c>pyran-2(1H)-one 
• 83588-36-7 5-(benzyloxy)octahydro-7-(2-iodoethyl)-8,8-dimethylpentaleno<1,6a-c>pyran-2(1H)-one 
• 83588-33-4 5-(benzyloxy)decahydro-8,8-dimethyl-2-oxopentaleno<1,6a-c>pyran-7-acetaldehyde 

Relevant academic research and scientific papers

A New Protocol for Stereocontrolled Lactone Annulation

Through regiocontrolled alkylation of cyclopentanone enolates with methyl 4-bromo-3-methoxycrotonate, base-promoted cyclization, and ketalization, α,β-unsaturated esters having a diquinane molecular framework are produced.Controlled reduction of the carbalkoxy group, application of the Claisen rearrangement, and implementation of an intramolecular Michael addition-oxidation sequence completes a scheme which leads efficiently to tricyclic lactones having structural features common to a number of sesquiterpenoid natural products.