Various primary and secondary amines were used to test the generality of the reductive amination reaction. The results are summarized in Table I. Reductive amination products and hydrocarbon dimers (reductive dimerization) exceed the Birch-type reduction products when primary amines are used. For example, cyclohexylamine and n-hexylamine gave 33 and 28% yields of N-cyclohexyl-l, 2, 3, 4-tetrahydro-2-naph-thylamine (5) and Nn-hexyl-1, ...
