Catalysis by Lewis Acids: Basic Principles for Highly Stereoselective Heterogeneously Catalyzed Cyclization Reactions

Menthol is an important fragance compound used in many consumer products such as cigarettes, chewing gums, toothpastes, pharmaceutical and personal care products. It is produced on a large scale in the fine chemical industry, and has an estimated worldwide consumption of 6000 tons/year.1–3 Of the ei...