甘油缩甲醛 、 吡啶 、 乙酸酐 在
silica gel 、 ethyl acetate n-hexane 作用下,
以In total 3.19 g (23%) of 1,3-dioxolane-4-methyl acetate (shorter retention time) and 5.23 g (37%) of 1,3-dioxan-5-yl acetate (longer retention time) were obtained的产率得到
Green Acetylation of Solketal and Glycerol Formal by Heterogeneous Acid Catalysts to Form a Biodiesel Fuel Additive
作者:Jennifer R. Dodson、Thays d C. M. Leite、Nathália S. Pontes、Bianca Peres Pinto、Claudio J. A. Mota
DOI:10.1002/cssc.201402070
日期:2014.9
A glut of glycerol has formed from the increased production of biodiesel, with the potential to integrate the supply chain by using glyceroladditives to improve biodiesel properties. Acetylated acetals show interesting cold flow and viscosity effects. Herein, a solventless heterogeneously catalyzed process for the acetylation of both solketal and glycerolformal to new products is demonstrated. The
9-(1,3-dihydroxy-2-propoxymethyl)guanine and 9-(2,3-dihydroxy-1-propoxymethyl)guanine have been found to have potent anti-viral activity against herpes viruses. These compounds, their acyl derivatives, their phosphate derivatives and their pharmaceutically acceptable salts, pharmaceutical formulations containing these compounds, the treatment of viral infections with these compounds, methods of preparing these compounds, and novel intermediates useful in their preparation are all disclosed.
The compounds may be prepared by reaction of the appropriate acetoxymethyl ether with diacetylguanine, followed by deprotection. The acetoxymethyl ethers may be obtained by reaction of glycerol formal with acetic anhydride in the presence of a catalyst.
Anti-viral compounds, their preparation and anti-viral compositions
申请人:Merck & Co., Inc.
公开号:EP0165164A1
公开(公告)日:1985-12-18
9-(1, 3-Dihydroxy-2-propoxymethyl) quanine and 9-(2, 3-dihydroxy-1-propoxymethyl) guanine have been found to have potent anti-viral activity against herpes viruses. These compounds, their acyl derivatieves, their phosphate derivatives and their pharmaceutically acceptable salts, phar-- maceutical formulations containing these compounds, the treatment of DNA viral or herpes viral infections with these compounds, methods of preparing these compounds, and novel intermediates useful in their preparation are all disclosed.
The compounds may be prepared by reaction of the appropriate acetoxymethyl ether with diacetyl-quanine, followed by deprotection. The acetoxymethyl ethers may be obtained by reaction of glycerol formal with acetic anhydride in the presence of a catalyst.
Novel polyacetal terpolymers of trioxane and alpha, alpha-and alpha, beta-isomers of glycerol formal and functional derivatives thereof
申请人:HOECHST CELANESE CORPORATION
公开号:EP0398585A2
公开(公告)日:1990-11-22
Cationic polymerization of trioxane and a mixture of α,α- and α,β-isomers of glycerol formal (or their ester derivatives) yields acetal terpolymers having pendant functional groups (i.e., hydroxyl or ester groups pendent from the polymer's backbone). The glycerol formal monomers employed in this invention may include functional groups selected from hydroxyl or ester moieties which are protected from, and thus survive, the polymerization process with trioxane. These groups may then be present as functional reactive sites for the subsequent synthesis of block polymers and/or to chemically bind modifiers to the acetal terpolymer backbone, for example.