The transformation of acetonides into the corresponding diacetates is often required in the synthetic chemistry. An efficient procedure for direct conversion of acetonides into diacetates in the presence of Bi(OTf)3·xH2O under mild conditions has been developed. Primary hydroxyl-acetonides could be selectively transformed into diacetates in the presence of anomeric acetonides and the anomeric acetonides
在合成化学中通常需要将丙酮化物转化为相应的二乙酸盐。开发了一种在温和的条件下在Bi(OTf)3 · x H 2 O存在下将丙酮化物直接转化为二乙酸盐的有效方法。可以在异头丙酮化物的存在下将伯羟基丙酮化物选择性地转化为二乙酸盐,并且异头丙酮化物可以可调谐地转化为2-乙酰氧基异丙基或二乙酸盐基团。
Levene; Raymond, Journal of Biological Chemistry, 1933, vol. 102, p. 317,323
作者:Levene、Raymond
DOI:——
日期:——
A mild, efficient, and selective procedure for transprotection of acetonides to acetates catalyzed with HClO4–SiO2
The transformation of acetonides into acetates is frequently required in synthetic chemistry. An efficient procedure for direct conversion of acetonides into acetates in the presence of HClO4-SiO2 under mild conditions was developed. The acetonides of primary hydroxy groups are directly converted to diacetates, and the anomeric acetonides of furanosides are stereoselectively transformed into the corresponding acetyl beta-D-furanosides with a 2-acetoxyisopropyl group. (C) 2009 Elsevier Ltd. All rights reserved.
Levene; Raymond, Journal of Biological Chemistry, 1934, vol. 107, p. 75,80