Site selectivity in the addition of ketoximes to activated allenes and alkynes; N- versus O-alkylation
Kelly, Bronwyn M.
- Publisher: Royal Society of Chemistry
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 progressed via an O-alkylation to give the O-...