Patent ID: 6242651
Filing Date: 2001-06-05
Classification: C07C

Abstract:
A preparation process of N,N'-dialkylalkanediamine by reacting dihaloalkane represented by the formula (1): ##STR8##wherein R.sub.1 and R.sub.2 are a hydrogen atom or a lower alkyl group, X is a chlorine, bromine or iodine atom, and n is an integer of 2 to 6, with lower alkylamine represented by the formula (2):R--NH.sub.2 (2)wherein R is a lower alkyl group, to obtain N,N'-dialkylalkanediamine represented by the formula (3): ##STR9##wherein R.sub.1 and R.sub.2 are a hydrogen atom or a lower alkyl group, X is a chlorine, bromine or iodine atom, and n is an integer of 2 to 6, characterized in that the reaction is carried out with controlling the residual amount of haloalkaneamine intermediate represented by the formula (4): ##STR10##wherein R is a lower alkyl group, R.sub.1 and R.sub.2 are a hydrogen atom or a lower alkyl group, X is a chlorine, bromine or iodine atom, and n is an integer of 2 to 6, to 0.002 mol or less for 1 mol of lower alkylamine represented by the formula (2).