Browsing University of Galway Support Services by Subject "1,3-dipolar cycloadditions"
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Nitrogen containing heterocycles from aldoximes; a one-pot route to isoxazolobenzodiazepinones, n-substituted and n-unsubstituted isoxazoloquinolinones
(Royal Society of Chemistry (RSC), 1998-01-01)The aldoximes 1 in the presence of electron poor olefins react to form either the 5,6,7-tricyclic isoxazolobenzodiazepinone 3 or the 5,6,6-tricyclic isoxazoloquinolinone 5 ring skeleton, In each case the ring system formed ... -
Site selectivity in the addition of ketoximes to activated allenes and alkynes; n- versus o-alkylation
(Royal Society of Chemistry (RSC), 1999-01-01)Reaction of ketoximes with methyl propiolate afforded geometrical isomers of the methyl 3-(hydroxyimino)propanoates 4 and of the O-vinyl oximes 5 as well as the 2-isoxazoline 6. With dimethyl penta-2,3-diendioate 8c reaction ...