Selenium-induced cyclization of O-allyl oximes as a synthetic route to N-alkyl isoxazolidines
摘要:
Phenylseleneyl bromide easily reacts with O-allyl oximes to afford cyclic iminium bromides which can be reduced in situ with sodium borohydride to produce substituted N-alkyl isoxazolidines in good yield.
Phenylseleneyl bromide easily reacts with O-allyl oximes to afford cyclic iminium bromides which can be reduced in situ with sodium borohydride to produce substituted N-alkyl isoxazolidines in good yield.
New synthesis of isoxazolidines from the selenium-induced cyclization of O-allyl hydroxylamines
The reaction of O-allyl hydroxylamines with phenylselenenyl sulfate, generated from the oxidation of diphenyl diselenide with ammonium persulfate, easily affords N-alkyl isoxazolidines as the result of a cyclization reaction through the formation of a carbon-nitrogen bond.