Give the structure of a compound that fits each description. (There may be more than one correct answer for each.)
(a) A chiral primary amine C4H7 N with no triple bonds
(b) A chiral primary amine C4H, IN
(c) Two secondary amines, which, when treated with CH3I. then Ag2O and heat, give propene and N,N-dimethylaniline
(d) A compound C4H9N that reacts with NaBH(OAc)3 with I equivalent of HOAc, then KOH, to give N-methyl-2-propanamine