An Shen

Title: An Shen: Innovator in Palladium Catalyst Technology

Introduction

An Shen is a notable inventor based in Shanghai, China. He has made significant contributions to the field of chemical engineering, particularly in the development of catalysts. His innovative work has led to the creation of a unique palladium catalyst that has promising applications in various chemical reactions.

Latest Patents

An Shen holds a patent for an N-heterocyclic carbene type palladium catalyst and its preparation method, as well as its applications. This invention relates to a novel palladium catalyst that boasts high activity and versatility. The preparation process involves selecting glyoxal as the raw material to synthesize glyoxaldiimine in the presence of Lewis acid or Bronsted acid. This is followed by a reaction with paraformaldehyde to obtain the NHC type ligand. The palladium then reacts with compounds containing carbon-nitrogen double bonds to form a palladium cyclic dimer. The final product is a coordinated NHC type palladium catalyst that exhibits excellent reaction activity in various catalytic-coupling reactions, including Suzuki-Miyaura, Heck, Buchwald-Hartwig, Kumada-Tamao-Corriu, Sonogashira, Negishi, and α-ketone arylation reactions. This catalyst can even function effectively at low concentrations, indicating a favorable prospect for industrial applications.

Career Highlights

An Shen is affiliated with the Shanghai Research Institute of Chemical Industry Co., Ltd. His work at this institute has allowed him to focus on innovative chemical processes and catalyst development. His contributions have been recognized within the scientific community, and he continues to push the boundaries of chemical engineering.

Collaborations

An Shen has collaborated with notable colleagues, including Yucai Cao and Xiangyang Wu. These partnerships have fostered a collaborative environment that enhances research and development efforts in the field of chemical catalysts.

Conclusion

An Shen's innovative work in developing a new palladium catalyst exemplifies the potential for advancements in chemical engineering. His contributions not only enhance the efficiency of chemical reactions but also pave the way for future industrial applications.