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DOI: 10.1055/sos-SD-002-00576

Mikami, K.; Matsumoto, Y.; Shiono, T.Science of Synthesis, (20032544.

The treatment of alkynetitanocene complex 193 or 194 with ethene gives titanacyclopentene complex 195 (Scheme 98). Hydrolysis of this complex gives a μ-oxo complex.[‌325‌] [Ti(Cp)2(H2C=CH2)] complexes 196 react with methylenecyclopropanes to give bicyclic titanacycles 197 (Scheme 98).[‌326‌] Insertion of methylenecyclopropane[‌327‌] or norbornene derivatives[‌328‌] into alkynetitanium complex 198 affords bicyclic or tetracyclic titanacycles 199 (Scheme 98).

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