Addition Reactions using Iminium Ions Derived from Hydrazines, Hydroxylamines and Sulfinamides

Addition Reactions using Iminium Ions Derived from Hydrazines, Hydroxylamines and Sulfinamides 

Naskar et al. have also reported the use of sulfinamides 51 in Petasis borono-Mannich reactions (Equation 7) [56]. Products 52 were obtained in good yields, but as 1 1 mixtures of diastereomers. The reaction was also accomplished using pyruvic acid, representing an unusual example of an enolizable ketone in a Petasis borono-Mannich reaction. 

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