Regio- and stereoselective synthesis for a novel class of organoaluminium compounds — substituted aluminacyclopentanes and aluminacyclopentenes assis
作者:U.M. Dzhemilev、A.G. Ibragimov
DOI:10.1016/0022-328x(94)88022-0
日期:1994.2
A novel regio- and stereoselective method has been developed for the catalytic cyclometallation of olefins and acetylenes with alkylalanes in the presence of Cp(2)ZrCl(2), to give in one stage high yields of 3-substituted aluminacyclopentanes and aluminacyclopentenes. Applications of these reactions to a wide range of linear and cyclic olefins and to those containing functional substituents have been studied. The transformation of the aluminacyclopentanes thus produced, into five-membered heterocycles, mono- and di-substituted cyclobutanes and cyclopropanes, has been demonstrated.
Synthesis and transformations of metallocycles
作者:A. G. Ibragimov、L. O. Khafizova、L. G. Yakovleva、E. V. Nikitina、K. G. Satenov、L. M. Khalilov、U. M. Dzhemilev
DOI:10.1007/bf02496268
日期:1999.4
A regioselective method for the synthesis of 3-alkyialumacyclopentanes and 2-alkyl-1,4-dialuminiobutanes by the reactions of alpha-olefins with EtAlCl2, ROAlCl2, R2NAlCl2, or Et2AlCl and the Mg-ClCH2CH2Cl-Cp2ZrCl2 (ZrCl4) system was developed.
Nontraditional approach to the synthesis of 3-substituted tetrahydrothiophenes and tetrahydroselenophenes
作者:U. M. Dzhemilev、A. G. Ibragimov、A. P. Zolotarev、G. A. Tolstikov
DOI:10.1007/bf00957191
日期:1989.6
——
作者:U. M. Dzhemilev、A. G. Ibragimov、L. O. Khafizova、L. V. Parfenova、D. F. Yalalova、L. M. Khalilov
DOI:10.1023/a:1012705711678
日期:——
The reactions of 3-alkyl-1-ethylalumacyclopentanes with allyl halides in the presence of Ni(acac)(2) as a catalyst were studied by dynamic NMR spectroscopy. Under the action of Ni complexes, alumacyclopentanes initially undergo intramolecular hydride transfer to give but-3-enyl(ethyl)aluminum hydrides and then react with the starting allyl halide, yielding but-3-enyl(ethyl)aluminum halides. Subsequent intramolecular carboalumination affords the corresponding 1,1-disubstituted cyclopropanes.
DZHEMILEV, U. M.;M.;IBRAGIMOV, A. T.;ZOLOTAREV, A. P.;TOLSTIKOV, T. A., IZV. AN CCCP. CEP. XIM.,(1989) N, S. 1444
作者:DZHEMILEV, U. M.、M.、IBRAGIMOV, A. T.、ZOLOTAREV, A. P.、TOLSTIKOV, T. A.