Chem. J. Chinese Universities ›› 2022, Vol. 43 ›› Issue (2): 20210588.doi: 10.7503/cjcu20210588

• Organic Chemistry • Previous Articles     Next Articles

Catalyst-free and Highly Efficient O-Silylation of Alcohols and Phenols

YU Jing, WU Chao, LI Chenyang, CHEN Danfeng, DING Liuyue, MA Xiantao()   

  1. College of Chemistry and Chemical Engineering,Xinyang Normal University,Xinyang 464000,China
  • Received:2021-08-16 Online:2022-02-10 Published:2021-10-08
  • Contact: MA Xiantao E-mail:xiantaoma@126.com
  • Supported by:
    the National Natural Science Foundation of China(22101243);the Young Core Instructor Program of Xinyang Normal University, China(2018GGJS-05);the Research and Innovation Projects for College Students of Xinyang Normal University, China(2020-DXS-096)

Abstract:

Silyl ethers are widely used in many fields such as organic synthesis, separation analysis, fine chemicals, etc. Hexamethyldiazosilane(HMDS) was recently developed as a new silyl reagent for the efficient synthesis of silyl ethers. However, a catalyst was usually required to activate the inert HMDS. In this work, an efficient and catalyst-free O-Silylation of alcohols and phenols was developed. This new method could be successfully applied to a variety of primary benzyl alcohols, heteroaryl benzyl alcohols, aliphatic alcohols, secondary alcohols and even tertiary alcohols. In Most cases, the target product was obtained under column chromatography-free conditions with a quantitative isolated yield. This method can be extended to the highly efficient O-Silylation of phenols, and also be easily scaled up to 100 mmol, giving the target product in 99% isolated yield, indicating that this new method is of good practical value.

Key words: Alcohol, Phenol, Silyl ether, Catalyst-free

CLC Number: 

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