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Titanocene(II)-promoted carbonyl allenation utilizing 1,1-dichloroalk-1-enes

Tomohiro Shono, Kenji Ito, Akira Tsubouchi and Takeshi Takeda*

*Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo, Email:

T. Shono, K. Ito, A. Tsubouchi, T. Takeda, Org. Biomol. Chem., 2005, 3, 2914-2916.

DOI: 10.39/b508820h


Treatment of 1,1-dichloroalk-1-enes with Cp2Ti[P(OEt)3]2 produced organotitanium species, which reacted with aldehydes and ketones to afford allenes.

see article for more examples

Peterson Allenation Using (Z)-(1-Lithio-1-alkenyl)trimethylsilanes

A. Tsubouchi, T. Kira, T. Takeda, Synlett, 2006, 2577-2580.

Key Words


ID: J52-Y2005-1130