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Two 18ē Ti(IV) eta5-Cp-tris(sec-amido)-type complexes derived from 1H-imidazol-2-yl side-chain functionalized

Xiaowu Wang1, Wanli Nie, Fang Ge

  • 1North-West University of Xi'an, College of Chemistry and Material Science, Taibai Bei Avenue 229, Xi'an 710069, Shaanxi Province, People's Republic of China.

Acta Crystallographica. Section C, Crystal Structure Communications
|July 7, 2009
PubMed

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Cycloadditions are one of the most valuable and effective synthesis routes to form cyclic compounds. These are concerted pericyclic reactions between two unsaturated compounds resulting in a cyclic product with two new σ bonds formed at the expense of π bonds. The [4 + 2] cycloaddition, known as the Diels–Alder reaction, is the most common. The other example is a [2 + 2] cycloaddition.
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