METHOD FOR PRODUCING DIAMINE DERIVATIVE

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专利权人:

发明人:

KOYAMA TAKEO JAPAN

申请号：

IN1312/MUMNP/2011

公开号：

IN2011MN01312A

申请日:

2011.06.23

申请国别(地区):

IN

年份:

2012

代理人:

摘要：

The present invention provides a method for producing a compound represented by formula (A), the method comprising the steps of: (a) mixing a compound represented by formula (B) with p-toluenesulfonic acid or p-toluenesulfonic acid monohydrate at less than 1 molar equivalent with respect to the compound represented by formula (B) in a solvent under heating (b) adding additional p-toluenesulfonic acid or p—toluenesulfonic acid monohydrate to the mixed solution under cooling,.........

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