N-substituted lithium 2-lithioallylamines: new intermediates in synthesis
Abstract
N-Phenyl or N-benzoyl 2-halogenoallylamines (5) or (10) react successively with phenyl-lithium and lithium naphthalenide at –78 °C to give the intermediates (4) or (11), which on reaction with electrophiles (water, deuterium oxide, dimethyl disulphide, aldehydes, ketones, or allyl bromide) yield functionalized allyl amines (6) and (12). The corresponding N-alkyl derivatives (9) afford prop-2-ynylamines (8) under the same reaction conditions.