Unusual cycloaddition of oxiranes with isocyanates catalyzed by tetraphenylstibonium iodide; selective formation of 3,4-disubstituted oxazolidinones.
作者:Akio Baba、Masahiro Fujiwara、Haruo Matsuda
DOI:10.1016/s0040-4039(00)83945-3
日期:1986.1
Tetraphenylstibonium iodide is a general and versatile catalyst for the selective formation of unusual cycloadducts, 3,4-disubstituted oxazolidinones, in the reaction of oxiranes with isocyanates.
Fujiwara, Masahiro; Baba, Akio; Matsuda, Haruo, Journal of Heterocyclic Chemistry, 1988, vol. 25, p. 1351 - 1357
作者:Fujiwara, Masahiro、Baba, Akio、Matsuda, Haruo
DOI:——
日期:——
Stereocontrolled oxazolidinone formation by the addition of 4,5-disubstituted iminodioxolane to oxirane via a spiro compound
作者:Akio Baba、Kenji Seki、Haruo Matsuda
DOI:10.1021/jo00008a021
日期:1991.4
4,5-Disubstituted 2-imino-1,3-dioxalanes readily add to oxiranes in the presence of AlCl3, furnishing 1,3-oxazolidin-2-ones in a stereospecific manner, where the configurations of oxiranes and iminodioxolanes are responsible for the configuration of products and the feasibility of the addition, respectively. A preliminary adduct, a spiro compound intermediate, is isolated, and its decomposition to oxazolidinone is demonstrated.
FUJIWARA, MASAHIRO;BABA, AKIO;MATSUDA, HARUO, J. HETEROCYCL. CHEM., 25,(1988) N, C. 1351-1357
作者:FUJIWARA, MASAHIRO、BABA, AKIO、MATSUDA, HARUO
DOI:——
日期:——
BABA, AKIO;SEKI, KENJI;MATSUDA, HARUO, J. ORG. CHEM., 56,(1991) N, C. 2684-2688