Transforming Oxadiazolines through Nitrene Intermediates by Energy Transfer Catalysis: Access to Sulfoximines and Benzimidazoles
作者:Do Dam Park、Kwan Hong Min、Jihee Kang、Ho Seong Hwang、Vineet Kumar Soni、Cheon-Gyu Cho、Eun Jin Cho
DOI:10.1021/acs.orglett.9b04646
日期:2020.2.7
compounds, sulfoximines and benzimidazoles, were ingeniously prepared from oxadiazolines via nitrene intermediates by photocatalytic N-O/C-N bond cleavages. The synthesis of sulfoximines was realized through intermolecular N-S bond formation between nitrene intermediates and sulfoxides, whereas benzimidazoles were obtained via intramolecular aromatic substitution of the nitrene to the tethered aryl substituent
反应条件的细微差别通过能量转移催化促进了恶二唑啉空前的光催化反应。一组化合物,亚砜亚砜和苯并咪唑,是通过恶唑中间体通过光催化的NO / CN键裂解,由恶二唑啉巧妙地制备的。亚砜中间体通过亚砜中间体和亚砜之间的分子间NS键形成来实现亚砜肟的合成,而苯并咪唑则是通过将亚硝基的分子内芳族取代成束缚的芳基取代基而获得的。