Sennics Co., Ltd.

Xiaomin Ruan

Xinmin Chen

Xiangyun Guo

Jinguo Xing

A method for preparing an aryl substituted p-phenylenediamine substance is provided. A structural formula of the aryl substituted p-phenylenediamine substance is shown as Formula (I'), where each of R&#x2032; and R&#x2033; is phenyl or o-methylphenyl, and R&#x2032; is same as or different from R&#x2033;; and the method comprises that: a raw material A and a raw material B are reacted in the presence of a hydrogen acceptor and a catalyst to form the aryl substituted p-phenylenediamine substance, the raw material A having a structure shown as Formula (I), the raw material B being cyclohexanone and/or o-methylcyclohexanone and the hydrogen acceptor being a hydrogen acceptor capable of accepting hydrogen for conversion into the raw material B. Raw materials are low in cost and readily available; use of a large amount of water for post-treatment is avoided. The reaction condition is relatively mild, and corrosion to equipment is avoided.

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Shanghai, China

Xiaomin Ruan