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Angew Chem Int Ed Engl. 1998 Mar 2;37(4):453-456. doi: 10.1002/(SICI)1521-3773(19980302)37:4<453::AID-ANIE453>3.0.CO;2-M.

Dithioacetals as an Entry to Titanium-Alkylidene Chemistry: A New and Efficient Carbonyl Olefination.

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Fachbereich Chemie der Universit√§t, Hans-Meerwein-Strasse, D-35043 Marburg (Germany), Fax: (+49)‚ÄČ6421-28-8917.


Wittig, Horner-Wadsworth-Emmons, Julia-Lythgoe, Tebbe, Grubbs, and Petasis-when it comes to carbonyl olefinations, these names are familiar to all chemistry students. In the future, the name Takeda will probably have to be added to this list. His recent work on the formation of titanium-alkylidene species from dithioacetals has provided organic chemists with a remarkable method for carbonyl olefination that is generally applicable under neutral to Lewis acidic conditions.


Alkylidene complexes; Olefinations; Synthetic methods; Titanium

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