Abstract
AbstractIodine-mediated oxidative annulations of N-benzyl-propiolamides are disclosed for the first time, providing either azaspiro[5.5]undecatrienones via dearomative ipso-annulation or benzo[c]azepinones through ortho-annulation. The selective construction of the aforementioned products is based on the ceric ammonium nitrate (CAN)-promoted divergent reactivity of the propiolamide, directed by the substituents on the phenyl ring of the N-benzyl group.
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