The Tebbe Reagent Is A Metal Carbenoid Prepared From The Dimetallomethylene Species Derived By The Reaction Of Trimethyl Aluminium With Titanocene Dichloride; This Reagent Exhibits Carbenoid Behaviour After The Addition Of A Catalytic Amount Of Pyridine. The Tebbe Reagent Reacts With Various Carbonyl Partners To Give The Product Of Methylenation:
Aldehydes To Alkenes
Ketones To Alkenes
Esters To Enol Ethers
Amides To Enamines