Kuriierous workers have reported the forination of heterocyclic coinpounds from ethanolaniirie derivatives. For instance, Hill and Powell1 reported a cyclization and dehydration of S-(3, 4-dihydroxyphenacyl)-PI;-benzoylethanolarine to 2-(3, 4- dihydroxyphenyl)-4-benzoyl-5, 6-dihydro-l, 4-oxazine. Norpholine ring formation froni a-(P- hydroxyethy1aniino) deoxybenzoins was studied2 and the observation was made that the ...
