Cycloaddition reactions of oximes; powerful new carbon–carbon bond forming methodology
作者:Paul Armstrong、Ronald Grigg、William J. Warnock
DOI:10.1039/c39870001325
日期:——
Oximes react with Michael acceptors and dipolarophiles, usually regio- and stereo-specifically, via a tandem Michael addition–1,3-dipolar cycloaddition process, to give isoxazolidines in good yield; analysis of the tandem process identifies four broad synthetic variants, and examples of those involving initial intermolecular Michael addition are given.
ARMSTRONG, PAUL;GRIGG, RONALD;WARNOCK, WILLIAM, J. CHEM. SOC. CHEM. COMMUN.,(1987) N 17, 1325-1327
作者:ARMSTRONG, PAUL、GRIGG, RONALD、WARNOCK, WILLIAM
DOI:——
日期:——
X=Y-ZH systems as potential 1,3-dipoles. Part 32 generation of nitrones from oximes. Tandem Michael addition-1,3-dipolar cycloaddition reactions. Background and class 1 processes.
作者:Ronald Grigg、Frances Heaney、Sivagnanasundram Surendrakumar、William J. Warnock
DOI:10.1016/s0040-4020(01)87116-7
日期:1991.1
keto nitrones can be trapped in regiospecific intermolecular cycloadditionreactions giving single cycloadducts in good yield. Chemospecific 1:1:1 cycloadducts are obtained from ketoximes, monosubstituted electronegative olefins (Michael acceptor) and N-methylmaleimide (dipolarophile), whilst the chemoselectivity of the corresponding reactions with aldoximes is dependent on the oxime stereochemistry.