Allenation of carbonyl compounds with alkenyltitanocene derivatives

摘要

The conversion of carbonyl compounds 1 to olefins 3 via titanocene alkylidene intermediates 2 is an important process with numerous applications in organic synthesis. In recent years, we have been involved with the develop- Ment of new and practical methods for carrying out this Type of titanium-mediated transformation, which is suit- Able not only for the olefination of aldehydes and ketones But also for heteroatom-substituted carbonyls.