A Mild, Efficient, and Selective Method for the Desilylation of More Common Trialkylsilyl Ethers by Cerium(III) Chloride Heptahydrate and Sodium Iodide in Acetonitrile
Treatment of trialkylsilyl ethers with cerium(III) chloride heptahydrate and sodium iodide in acetonitrile provides a simple, convenient, and chemoselective process for desilylation, and the parent alcohol was obtained in high yield. The trialkylsilyl ethers have been cleaved selectively in the presence of acetate, benzyl and tetrahydropyranyl ethers.
A novel, highly efficient and selective desilylating method for trialkylsilyl ethers
作者:Adam Shih-Yuan Lee、Hsiu-Chih Yeh、Jiun-Jie Shie
DOI:10.1016/s0040-4039(98)01035-1
日期:1998.7
A series of tert-butyldimethylsilyl, tert-butyldiphenylsilyl and triisopropylsilyl ethers are hydrolyzed to theirs corresponding alcohols in CBr4/CH3OH (0.1 eq. / 10mL) reaction system under refluxing condition. The chemoselectivity can be achieved between primary and secondary triisopropylsilyl ethers when more hindered 2-propanol is used instead of methanol. (C) 1998 Elsevier Science Ltd. All rights reserved.
Desilylation procedure via a naphthalene-catalysed lithiation reaction
作者:Cherif Behloul、David Guijarro、Miguel Yus
DOI:10.1016/j.tet.2005.03.145
日期:2005.7
naphthalene, in THF, at 0 °C led, after hydrolysis, to the recovery of the free alcohols, amines and thiols in very good yields. At least a phenyl group was required in the silyl protecting group for the success of the reaction. Some polyfunctionalised starting materials have successfully been deprotected. The stereochemical outcome of the deprotection of a silylated chiral secondary alcohol has also been
A mild method for rapid tert-butyldiphenylsilylation of primary and secondary alcohols
作者:Steven A. Hardinger、Ngadi Wijaya
DOI:10.1016/s0040-4039(00)79237-9
日期:1993.6
A rapid and efficient method for the protection of primary and secondary alcohols as their tert-butyldiphenylsilyl (tBDPS) ethers was developed. Reaction of the alcohol and tBDPSCl in DMF with AgNO3, NH4NO3, or NH4ClO4 provides good yields of the corresponding silyl ethers
开发了一种快速有效的方法来保护伯醇和仲醇的叔丁基二苯基甲硅烷基(tBDPS)醚。醇和tBDPSCl在DMF中与AgNO 3,NH 4 NO 3或NH 4 ClO 4的反应可提供相应甲硅烷基醚的良好收率