作者:Colin F. Lynch、Joseph W. Downey、Yongliang Zhang、Jacob M. Hooker、Mark D. Levin
DOI:10.1021/acs.orglett.3c02838
日期:2023.10.6
carbon of phenols. Our approach relies on the synthesis of a 1,5-dibromo-1,4-pentadiene precursor, which upon lithium–halogen exchange followed by treatment with carbonate esters results in a formal [5 + 1] cyclization to form the phenol product. Using this strategy, we have prepared 12 1-13C-labeled phenols, show proof-of-concept for the labeling of phenols with carbon-14, and demonstrate phenol synthesis
我们报告了一种能够将碳同位素快速掺入酚类本身碳中的方法。我们的方法依赖于 1,5-二溴-1,4-戊二烯前体的合成,该前体经过锂-卤素交换,然后用碳酸酯处理,导致正式的 [5 + 1] 环化,形成苯酚产物。使用这种策略,我们制备了 12 1- 13 C 标记的酚,展示了用碳 14 标记酚的概念验证,并演示了直接从回旋加速器产生的 [ 11 C]CO 2合成酚。