Hydrogen Bromide → (1S,4S)-2-Benzyl-2,5-Diazabicyclo[2.2.1]heptane

Participants

Reaction Conditions

Reaction Steps

A mixture of (1S,4S)-2-(4-toluenesulfonyl)-5-phenylmethyl-2,5-diazabicyclo[2.2.1]heptane (54.9 g) in acetic acid (830 mL) containing hydrobromic acid (30% wt) was heated at 70° C. for 18 h. The reaction mixture was allowed to cool and concentrated under reduced pressure to a final volumen of ca. 300 mL. The precipitate that formed was filtered and washed with acetone to give (1S,4S)-N-benzyl-2,5-diazabicyclo[2.2.1]heptane (50.30 g 91.3%, m.p. 272-275° C.).

Provenance & Evidence