"For example, the amines of formula ##STR32## where a is 1, 2, or 3, n is 2, or 3 and R6 is as defined above are obtained by reacting the appropriate corresponding N-protected amine wherein R6 is hydrogen with, for example, a compound of the formula (R6)'-Hal where (R6)' has any of the values assigned above for R6 except hydrogen and Hal is Cl, Br, I or other known leaving groups such as SO3 CH3." . . . .