Reaction of oxiranes with alkali metals in aprotic solvents yields a variety of products depending on the nature of the metal and the structure of the oxirane. Deoxygenation to olefins is the major reaction in case of lithium. Rearrangement to carbonyl compounds, reduction to alcohols and formation of dimeric products occur when oxiranes are treated with sodium. All the reactions could be rationalised
242. Chalcones and related compounds. Part IV. Addition of hydrogen cyanide to chalcones
作者:W. Davey、D. J. Tivey
DOI:10.1039/jr9580001230
日期:——
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.
GURUDUTT, K. N.;PASHA, M. A.;RAVINDRANATH, B.;SRINIVAS, P., TETRAHEDRON, 1984, 40, N 9, 1629-1632
作者:GURUDUTT, K. N.、PASHA, M. A.、RAVINDRANATH, B.、SRINIVAS, P.