Zur Darstellung von β-Oxyalkyl-dimethyl-purinen; Umsetzung von Theophyllin und Theobromin mit 1,2-Epoxyden III. Mitteilung: Aminolyse von Epoxyden
作者:H. J. Roth
DOI:10.1002/ardp.19592920504
日期:——
Silica Sulfuric Acid (SSA) as a Highly Efficient Heterogeneous Catalyst for Persilylation of Purine and Pyrimidine Nucleobases and Other <i>N</i>-Heterocycles Using Hmds
Purine and pyrimidine nucleobases and other N-heterocycles have been silylated with HMDS in excellent yields in the presence of a catalytic amount of silica sulfuric acid (SSA) as a heterogeneous catalyst. SSA utilizes a shorter reaction time and higher yields of silylated nucleobases. SSA is reusable for several times without a decrease in reactivity or yield of silylated adducts.