Room Temperature, Endo-Specific 1-Aza-1,3-butadiene Diels-Alder Reactions: Acceleration of the LUMOdiene-Controlled Cycloaddition Reactions through Noncomplementary Azadiene Substitution

Article abstract of DOI:10.1021/jo00297a006

A preparation of N-sulfonyl-2-(ethoxycarbonyl)-1-aza-1,3-butadienes 5-6 is described and is based on the use of the stabilized Wittig reagent 1 and implementation of a subsequent room temperature, in situ homolytic oxime O-sulfinyl to N-sulfonyl rearrange