Silica Sulfuric Acid as a Reusable Catalyst for Efficient and Simple Silylation of Hydroxyl Groups Using Hexamethyldisilazane (HMDS)
作者:Hossein Ghafuri、Bagher Eftekhari-Sis、Mohammed M. Hashemi
DOI:10.1080/10426500701289781
日期:2007.6.1
At room temperature, alcohols and phenols are efficiently protected with hexamethyldisilazane (HMDS) in the presence of silica sulfuric acid in good to excellent yields. The catalyst can be recycled for subsequent reactions without any appreciable loss of efficiency.
Simple and Practical Protocol for the Silylation of Phenol Derivatives Using Reusable NaHSO<sub>4</sub> Dispread on Silica Gel Under Neutral Conditions
作者:Mahideh S. Khalili、Hossein Ghafuri、Samaneh Mojahedi-Jahromi、Mohammed M. Hashemi
DOI:10.1080/10426500600892487
日期:2007.1.1
A simple and mild procedure for the trimethylsilylation of a wide variety of phenols with hexamethyldisilazane (HMDS) on the surface of silica gel dispersed with NaHSO4 at r.t. in a few minutes with excellent yields under neutral conditions is reported. This procedure also allows an excellent selectivity for the silylation of phenols in the presence of amine and CO2H groups.
Bhatt; Kumari, Raj; Sharma, Neeraj, Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 2004, vol. 43, # 4, p. 778 - 781
作者:Bhatt、Kumari, Raj、Sharma, Neeraj、Chaudhry
DOI:——
日期:——
SHAKIROV, L. G.;TSYPYSHEVA, L. G.;SELEJMANOVA, R. A.;NAJMUSHIN, A. I.;TSY+, ZH. ANAL. XIMII, 43,(1988) N 1, 143-146
作者:SHAKIROV, L. G.、TSYPYSHEVA, L. G.、SELEJMANOVA, R. A.、NAJMUSHIN, A. I.、TSY+
DOI:——
日期:——
Preparation and Thermal Rearrangement of Poly(trimethylsilyl)phenols