作者:Tina A. Gschneidtner、Kasper Moth-Poulsen
DOI:10.1016/j.tetlet.2013.07.144
日期:2013.10
Several photo-caged alcohols were synthesized via mild copper(II)-catalyzed substitution between tertiary propargylic alcohols and 2-nitrobenzyl alcohol to build up robust, base stable o-nitrobenzyl (NB) photo-cleavable compounds. We compare the new photolabile protecting group with the commonly used alkyne protecting group, 2-methyl-3-butyn-2-ol and the results show that NB ethers are stable under the
我们提出了一种对末端炔烃进行光不稳定保护的策略。通过在叔炔丙醇和2-硝基苄醇之间的轻度铜(II)催化取代反应合成了几种光笼蔽的醇,以建立坚固的,碱稳定的邻硝基苄基(NB)可光裂解的化合物。我们将新的光不稳定保护基团与常用的炔烃保护基团2-甲基-3-丁炔-2-醇进行了比较,结果表明,NB醚在裂解条件下对甲基丁炔醇保护的炔烃的裂解是稳定的。另外,我们提出了含有硫醇基团的光可裂解的NB衍生物的合成,该衍生物可以用作光诱导的表面官能化反应的试剂。