A Facilitated Cyclic Ether Formation and Its Potential Application in Solid-Phase Peptide and Organic Synthesis.
作者:Daxian SHAN、Ailian ZHENG、Eric.C BALLARD、Wei WANG、Ronald T. BORCHARDT、Binghe WANG
DOI:10.1248/cpb.48.238
日期:——
similar trimethyl lock system can also facilitate cyclic ether formation with the concomitant release of a carboxylic acid in the presence of anhydrous tetrabutylammonium fluoride. To study this base-mediated trimethyl lock-facilitated cyclic ether formation, we synthesized fifteen model compounds. All model compounds underwent base-mediated cyclic ether formation in high yields at 0 degree C to room
已知“三甲基锁定”系统通过所谓的立体种群控制机制促进内酯化反应。我们已经发现,在无水四丁基氟化铵存在下,类似的三甲基锁定系统也可以促进环状醚的形成,同时伴随羧酸的释放。为了研究这种碱基介导的三甲基锁促进的环醚的形成,我们合成了十五种模型化合物。所有模型化合物都在0摄氏度到室温(rt)的条件下以高收率进行了碱介导的环醚的形成,并伴随着所附着的羧酸盐的释放。这种系统潜在地可以用于开发用于固相肽和有机合成的二维接头。