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Zhengzhou Changkuan Technology Co., Ltd.
Technology

We emphasize technological innovation, and make it our core competitiveness and development motivity. We have close cooperation with numerous scientific research institutions and colleges in China. We are skillful in various reactions since their reaction temperature is from -78ºC to 260ºC, or their reaction pressure is from negative pressure to 6.5 MPa. We can conduct about 20 kinds of organic reactions including halogenating reaction, organometallic reaction, and coupled reaction. We can meet clients’ demands of orders from gram level to tens of tons level.

We are skillful in the following reactions:
• Iodination
• Cross-coupling reactions
• Hoffmann rearrangement
• Organometallic reactions (Zn, Al, Mg, Li, Cu)
• Huang Minglong modified wolff-kishner reduction
• Distillation (from atmosphere pressure to 0.2Pa)
• Amidation
• Chlorination Bromination
• Broad temperature reactions ( -78ºC-260ºC)
• Cyanation
• Column purification
• Crystallization
• Dehydrogenation
• Esterification
• Friedel Crafts(acylation and alklation)
• Fritsch-Buttenberg-Wiechell rearrangement
• Fries rearrangement
• Hydrogenations (at atmosphere pressure or higher Pressure)
• Oxidation
• Reduction with metal hybrids or hydrogen





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