A Photosensitizer for N–O Bond Activation: 2,7-Br-4CzIPN-Catalyzed Difunctionalization of Alkenes with Oxime Esters
作者:Cai Gao、Jiahao Zeng、Xianming Zhang、Yanzhi Liu、Zhuang-ping Zhan
DOI:10.1021/acs.orglett.3c01073
日期:2023.5.5
6-tetrakis(2,7-dibromo-9H-carbazol-9-yl)isophthalonitrile (2,7-Br-4CzIPN) as a new photosensitizer for the energy-transfer-driven N–O bond dissociation of oxime esters. In the presence of 2,7-Br-4CzIPN, difunctionalization of alkenes with oxime esters, including oxyimination, aminocarboxylation, and amidylimination, could afford a variety of versatile molecules in good yields with excellent regioselectivity
我们开发了 2,4,5,6-四(2,7-二溴-9 H -咔唑-9-基)间苯二甲腈 (2,7-Br-4CzIPN) 作为能量转移驱动 N- 的新型光敏剂肟酯的 O 键解离。在 2,7-Br-4CzIPN 的存在下,烯烃与肟酯的双官能化,包括氧化亚胺化、氨基羧化和酰胺基化,可以以良好的产率和优异的区域选择性提供多种多功能分子,广泛存在于天然产物和药物中。我们的理论研究和实验表明,2,7-Br-4CzIPN 具有独特的光物理性质、良好的三线态能量和优异的光催化活性。