Improved Preparation of N-Trimethylsilylpyridinium Triflate, N-Triphenylsilylpyridinium Triflate, N-Triisopropylsilylpyridinium Triflate and Their Use in Silylating Alcohols to Silyl Ethers
作者:George A. Olah、Douglas A. Klumpp
DOI:10.1055/s-1997-1421
日期:1997.7
N-Silylpyridinium triflates 1a-c have been prepared in excellent yield from the corresponding allyl silanes by reaction with triflic acid followed by pyridine. Compounds 1a-c were used to prepare silyl ethers from alcohols in generally high yield. A convenient procedure has been developed which enables the silylation of alcohols without an aqueous workup in the product isolation.
SOROCHINSKIJ A. E.; ALEKSANDROV A. M.; GAMALEYA V. F.; KUXAR V. P., ZH. ORGAN. XIMII, 1981, 17, HO 8, 1642-1648
作者:SOROCHINSKIJ A. E.、 ALEKSANDROV A. M.、 GAMALEYA V. F.、 KUXAR V. P.
DOI:——
日期:——
Rapid and Efficient Trimethylsilyl Protection of Hydroxyl Groups Catalyzed by Niobium(V) Chloride
作者:Jun-Tao Hou、Hong-Li Chen、Zhan-Hui Zhang
DOI:10.1080/10426507.2010.482544
日期:2010.12.30
variety of alcohols, including primary, benzylic, secondary, and phenols with hexamethyldisilazane, has been developed. The reactions were carried out at room temperature in the presence of a catalytic amount of niobium(V) chloride and afforded the corresponding trimethylsilyl ethers in high to excellent yields in short time. GRAPHICAL ABSTRACT