作者:Dario Bragagnolo、Christian G. Bochet
DOI:10.1007/s43630-021-00150-7
日期:2022.5
Although reported several decades ago, 3,3',5,5'-tetramethoxybenzoin esters have not been used as a common photolabile protecting group, contrary to their unsymmetrical 3',5'-dimethoxybenzoin analogues. While the properties of the latter are superior, their tedious synthesis and chemical instability represent a drawback. In this article, we describe a reliable synthetic access to the symmetrical tetramethoxybenzoin
尽管几十年前已有报道,但与其不对称的 3',5'-二甲氧基苯偶姻类似物相反,3,3',5,5'-四甲氧基苯偶姻酯尚未用作常见的光不稳定保护基团。虽然后者的性能优越,但它们繁琐的合成和化学不稳定性是一个缺点。在本文中,我们描述了对对称四甲氧基苯偶姻衍生物的可靠合成方法,并表明它们的光化学行为仍然很有趣,特别是与硝基藜芦酯的色正交性。