Problems and exercisesAmines and anilines

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Exercise 1

Propose two syntheses of 2-phenylethylamine, PhCH₂CH₂NH₂: one from benzyl bromide and one from 2-phenylethanol. Why is it not advisable to treat 2-phenylethyl bromide with ammonia?

Exercise 2

Which amine is obtained by reductive amination of acetone with (a) ammonia and (b) benzylamine? Why is NaBH(OAc)₃ used rather than NaBH₄?

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