Chem. J. Chinese Universities ›› 2025, Vol. 46 ›› Issue (7): 20250053.doi: 10.7503/cjcu20250053

• Organic Chemistry • Previous Articles     Next Articles

Semi-continuous Flow Synthesis of 2-Methyl-5-aminophenol

WU Junhui1, WU Jiajia1, PAN Shuangye2, CHEN Jianai1(), TAN Chengxia1()   

  1. 1.College of Chemical Engineering,Zhejiang University of Technology,Hangzhou 310000,China
    2.Zheiiang Ningbo Ecological And Environmental Monitoring Center,Ningbo 315000,China
  • Received:2025-02-26 Online:2025-07-10 Published:2025-04-09
  • Contact: TAN Chengxia E-mail:chenjianai@zjut.edu.cn;tanchengxia@zjut.edu.cn
  • Supported by:
    the Industry Sponsored Research Program of Zhejiang University of Technology, China(KYY-HX-20230804);the Open Project of the State Key Laboratory of Green Chemical Synthesis and Conversion, China

Abstract:

2-Methyl-5-aminophenol is a crucial high-activity intermediate extensively utilized in the fields of dyes, pharmaceuticals and cosmetics, with a continuously increasing market demand. However, traditional industrial production methods are characterized by high energy consumption, long reaction times and safety concerns. Based on the technical advantages of continuous flow reactors, a semi-continuous flow synthesis process was developed in this work. By transforming the production processes of three key intermediates into continuous flow processes, the reaction time was significantly reduced from 12 h to just 4 min, and the final product separation yield reached 78.5%. This innovative approach not only significantly improved the reaction efficiency, but also optimized the process conditions, making the product generation more stable, while effectively reducing energy consumption and safety risks. The research results provide an valuable reference for the integrating continuous flow technology with green and efficient industrial production.

Key words: Micro-channel reactor, Fixed-bed reactor, Catalytic hydrogenation, Nitration reaction

CLC Number: 

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