| abstract |
Formula 1n n n [Formula 1]n n n n n n n n [Wherein, R 1 is C 1-6 alkyl or the like and R 2 is hydrogen or the like, or R 1 and R 2 are integrated to form C 1-6 alkylene]n n n To a compound represented by the formulan n n [Formula 2]n n n R 3- (NH)-R 4 n n n [Wherein, R 3 and R 4 are each C 1-6 alkyl or the like]n n n Formula 3 comprising the step of reacting with a compound represented by and a step of treating the obtained reaction mixture with acidic water at 0 to 30 ℃n n n [Formula 3]n n n n n n n n [Wherein R 1 , R 2 , R 3 and R 4 are as defined above]n n n The manufacturing method of the high purity compound shown by this. |