Cope rearrangement and internal cycloaddition of 5-Allyl-3,3,5-trimethyl-1-pyrroline 1-Oxide

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Abstract
5-Allyl-3,3,5-trimethyl-1-pyrroline 1-oxide(5)undergoes thermal Cope rearrangement to 5-allyl-2,4,4-trimethyl-1-pyrroline I-oxide(6)and further cyclization to 1,6,6-trimethyl-9-oxa-8-azatricyclo[3,2,l,l9,8]nonane (7).