Catalytic synthesis and reactions of magnesiocycloalkanes. 2. Synthesis of substituted magnesiocyclopentanes in the presence of zirconium complexes
摘要:
Catalytic cyclometallation of styrene, m-methylstyrene, p-tert-butylstyrene, and 1-hexene with di-n-alkylmagnesium compounds (n-R2Mg, where R = C3H7, C4H9, and C6H13) in the presence of Cp2Zr2Cl2 has given high yields of 2,4-disubstituted magnesiocyclopentanes. The probable mode of formation of magnesiocyclopentanes, involving zirconocyclopentanes formed from Cp2ZrCl2, n-R2Mg, and the appropriate olefins as reactive intermediates in the cyclometallation, is discussed.
Catalytic synthesis and reactions of magnesiocycloalkanes. 2. Synthesis of substituted magnesiocyclopentanes in the presence of zirconium complexes
作者:U. M. Dzhemilev、R. M. Sultanov、R. G. Gaimaldinov、R. R. Muslukhov、S. I. Lomakina、G. A. Tolstikov
DOI:10.1007/bf01150907
日期:1992.4
Catalytic cyclometallation of styrene, m-methylstyrene, p-tert-butylstyrene, and 1-hexene with di-n-alkylmagnesium compounds (n-R2Mg, where R = C3H7, C4H9, and C6H13) in the presence of Cp2Zr2Cl2 has given high yields of 2,4-disubstituted magnesiocyclopentanes. The probable mode of formation of magnesiocyclopentanes, involving zirconocyclopentanes formed from Cp2ZrCl2, n-R2Mg, and the appropriate olefins as reactive intermediates in the cyclometallation, is discussed.
Selective sp3 C-H Bond Activation Based on a Carbocation Relay: Friedel-Crafts Reaction with Alkanes as the Alkylating Component
作者:Jie Wang、Pengfei Zhou、Yang Wang
DOI:10.1002/ejoc.201001118
日期:2011.1
4-methylpentyl-substituted aromatics has been developed using a carbocation relay strategy through selective sp3C-Hbondactivation, providing a facile and cost-effective approach for the construction of benzocyclic compounds. A variety of 1,1-dimethylindane and naphthalene derivatives have been prepared from very simple startingmaterials in good yields with high selectivity. The present strategy