employed in the deprotection of silylethers. The fluorous character of these compounds was examined by measuring the partition coefficient between the fluorous and organic solvents. The benzoquinone derivatives showed significant fluorous character, indicating that they can be recovered from the reaction mixtures using a fluorous/organic biphasic system. The oxidising ability of the fluorous benzoquinones
P(MeNCH<sub>2</sub>CH<sub>2</sub>)<sub>3</sub>N: An Efficient Catalyst for the Desilylation of <i>tert</i>-Butyldimethylsilyl Ethers
作者:Zhengkun Yu、John G. Verkade
DOI:10.1021/jo991591i
日期:2000.4.1
in 68-94% yield in the presence of 0.2-0.4 equiv of P(MeNCH2CH2)3N. Using P(i-PrNCH2-CH2)3N as the catalyst, 85-97% yields of desilylated alcohols were obtained from TBDMS ethers of 1-octanol, 2-phenoxyethanol, and racemic alpha-phenyl ethanol. These are the first examples of desilylations of silyl ethers catalyzed by nonionic bases. Both catalysts were much less effective for the desilylation of t
1,8-Diazabicyclo[5.4.0]undec-7-ene. An Effective and Selective Catalyst for the<i>t</i>-Butyldimethylsilylation of Alcohols
作者:Sunggak Kim、Heung Chang
DOI:10.1246/bcsj.58.3669
日期:1985.12
The use of 1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU) as a catalyst has been found to be very effective and selective in the t-butyldimethylsilylation of primary and secondary alcohols.
Novel Method for Efficient Aerobic Oxidation of Silyl Ethers to Carbonyl Compounds Catalyzed with <i>N</i>-Hydroxyphthalimide (NHPI) and Lipophilic Co(II) Complexes
作者:Babak Karimi、Jamshid Rajabi
DOI:10.1021/ol049294+
日期:2004.8.1
In this work, a new method for highly efficient and selective oxidative deprotection of a variety of structurally diverse trimethylsilyl (TMS) and tert-butyldimethylsilyl (TBS) ethers using molecular oxygen in the presence of N-hydroxyphthalimide (NHPI) and various types of Co(II) complexes is reported. As a result of the relatively neutral reaction medium, acid-sensitive functional groups such as
A Desilylation and a One-Pot Desilylation−Oxidation of Aliphatic <i>tert</i>-Butyldimethylsilyl Ethers Using Catalytic Quantities of PdCl<sub>2</sub>(CH<sub>3</sub>CN)<sub>2</sub>