Synthesis of Nitrogen Heterocycles via Photochemical Ring Opening of Pyridazine <i>N</i>-Oxides
作者:Maribel Portillo、Michael A. Maxwell、James H. Frederich
DOI:10.1021/acs.orglett.6b02562
日期:2016.10.7
A photochemical method for the direct synthesis of 1H-pyrazoles from pyridazine N-oxides was developed. This chemistry features a regioselective approach to nonsymmetrically substituted pyridazine N-oxides. Herein, we highlight the first strategic use of photoinduced ring-opening reactions of 1,2-diazine N-oxides for the preparative synthesis of nitrogen heterocycles.
开发了一种从哒嗪N-氧化物直接合成1 H-吡唑的光化学方法。该化学特征在于对非对称取代的哒嗪N-氧化物的区域选择性方法。在本文中,我们重点介绍了1,2-二嗪N-氧化物光诱导的开环反应在制备氮杂环化合物中的第一个战略用途。