Synthesis and antimalarial activity of new 1,2,4,5-tetroxanes and novel alkoxy-substituted 1,2,4,5-tetroxanes derived from primary gem-dihydroperoxides
摘要:
A convenient synthesis of new unsymmetrically substituted 1,2,4,5-tetroxanes and novel unsymmetrical alkoxy-substituted 1,2,4,5-tetroxanes starting from primary dihydroperoxides was developed. The structure of some tetroxanes was unambiguously assigned by X-ray crystal analysis giving interesting insights in the configuration and conformation of disubstituted 1,2,4,5-tetroxanes. Some of these tetroxanes showed notable antimalarial activity in vitro. (C) 2010 Elsevier Ltd. All rights reserved.
Aldehydes were efficiently converted directly into the corresponding gem-dihydroperoxides (DHPs) on treatment with aqueous 70% H2O2 in a biphasic system with ether catalyzed by camphorsulfonic acid. The synthesis represents the most versatile access to this class of compounds.
醛被有效直接转化为相应的宝石上治疗用含水70%H -dihydroperoxides吡啶类(DHP)2 Ô 2中的两相体系与由樟脑磺酸催化的醚。合成代表了此类化合物最通用的获取途径。
Synthesis and antimalarial activity of new 1,2,4,5-tetroxanes and novel alkoxy-substituted 1,2,4,5-tetroxanes derived from primary gem-dihydroperoxides
A convenient synthesis of new unsymmetrically substituted 1,2,4,5-tetroxanes and novel unsymmetrical alkoxy-substituted 1,2,4,5-tetroxanes starting from primary dihydroperoxides was developed. The structure of some tetroxanes was unambiguously assigned by X-ray crystal analysis giving interesting insights in the configuration and conformation of disubstituted 1,2,4,5-tetroxanes. Some of these tetroxanes showed notable antimalarial activity in vitro. (C) 2010 Elsevier Ltd. All rights reserved.
Synthesis of Primary <i>gem</i>-Dihydroperoxides and Their Peroxycarbenium [3 + 2] Cycloaddition Reactions with Alkenes
作者:Qinghong Zha、Yikang Wu
DOI:10.1021/acs.joc.0c02180
日期:2020.11.6
a peroxycarbenium [3 + 2] cycloadditionreaction with alkenes for the first time. Aromatic substrates normally reacted smoothly, affording the expected 1,2-dioxolanes smoothly. Aliphatic aldehydes generally failed to yield 1,2-dioxolane. In all cases, unexpected formation of either a chlorohydrin or a 1,2-dichloride (with Cl atoms derived from TiCl4) depending on the alkene employed was observed, which