In the forward synthesis, it
gen and a metal (Rh) catalyst.
the imine and iminium ion
turned out that the nitrite reduction was best done using h州ro-
'The final methyl
(see Chapter 2})
ation of the primary amine had to be done via
to prevent further unwanted alkylations. The
reagent was an excess of formaldeh沁e (methanal CHz=O) in the presence
of formic acid (HCO2H).