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Digitale Medien

Synthesis and Structural Characterization of Azatitanacyclobutane Derivatives (1998)

Beckhaus, Rüdiger ; Wagner, Martin ; Wang, Ruimin

Weinheim : Wiley-Blackwell

Berichte der deutschen chemischen Gesellschaft 1998 (1998), S. 253-256

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Details

ISSN: 1434-1948

Schlagwort(e): Titanium ; Vinylidene complexes ; [2+2] Cycloaddition ; Metallacycles ; Azatitanacyclobutanes ; Clathrates ; Chemistry ; General Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: The titanocene vinylidene intermediate [Cp*2Ti=C=CH2] (9) reacted with the carbodiimides R-N=C=N-R [R = p-CH3C6H4 (19a), C6H11 (19b)] to give the N=C-cycloaddition products [Cp*2Ti{-NR-C(=NR)-(C=CH2)-}] [(R = p-CH3C6H4 (20a), C6H11 (20b)]. The X-ray structure of 20a in form of a surprisingly stable n-hexane clathrate is presented. The azatitanacyclobutane [Cp*2Ti{-NPh-C(Ph)(H)-(C=CH2)-}] (22) was formed from the reaction between 9 and benzylidene aniline [PhN=C(Ph)H (21)]. Reactivity studies showed that azatitanacyclobutanes are unreactive upon typical ring-enlargement reactions as observed for other four-membered titanacycles.

Materialart: Digitale Medien

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