Preparation of 2-Substituted Pyrrolines by an Intramolecular Schmidt Reaction of 4-Substituted 3-Butenyl Azides

Abstract
4-Substituted 3-butenyl azides readily undergo an intramolecular carbocation version of the Schmidt reaction with trifluoromethanesulfonic acid at 0 °C to give 2-substituted pyrrolines.

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