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ChemInform Abstract: New “Cp2Zr”-Mediated Ring Transformations of 2-Vinylheterocycles to Carbocycles.

✍ Scribed by Y. HANZAWA; H. KIYONO; N. TANAKA; T. TAGUCHI

Publisher
John Wiley and Sons
Year
2010
Weight
30 KB
Volume
28
Category
Article
ISSN
0931-7597

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✦ Synopsis

New "Cp2Zr"-Mediated Ring Transformations of 2-Vinylheterocycles to Carbocycles. -2-Vinylheterocycles undergo a novel ring transformation mediated by Cp2ZrCl2 via an intramolecular allylation of Z-allylic zirconocene species. The epoxide or aziridine intermediates thus obtained rearrange mainly to cis-disubstituted carbocycles. Interestingly, almost identical product mixtures are obtained from related cis-and trans-educts. -(HANZAWA, Y.; KIYONO,

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