Alkylidenation of Carbonyl Compounds with Dialkyltitanocenes and Related Complexes

Alkylidenation of Carbonyl Compounds with Dialkyltitanocenes and Related Complexes 

Cyclopropylidenation An interesting application of the Petasis alkylidenation is in the preparation of alkylidenecydopropanes utilizing bis(cyclopropyl)titanocene 37 [89], as the cydopropyl ring has a unique chemical character and undergoes skeletal rearrangement with the relief of strain as a driving force. Bis(cyclopropyl)tita- 

Carbonyl Olefination Utilizing an Alkyl Halide-Titanocene(ll) System 

An alkyl halide-titanocene(II) system offers an operationally straightfortvard method for carbonyl olefination, tvhich is believed to be mechanistically analogous 

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