Method for producing azido-amine derivative

1. A method for producing an azido-amine derivative of formula (II), the method comprising:

a step of obtaining an azido-amine derivative represented by formula (II) shown below; and

a step of extracting the azido-amine derivative represented by formula (II) shown below, obtained by using toluene as an aromatic solvent:

wherein in the formula, R1 to R4, which may be the same or different, each represent a hydrogen atom, an alkyl group, an aryl group or a heterocyclic residue, and the alkyl group, the aryl group or the heterocyclic residue may further have a substituent, and

n represents an integer from 1 to 11, and when n is 2 or more, a plurality of R3 and R4 may be the same or different.