Synthesis of Chromenoisoxazolidines from Substituted Salicylic Nitrones via Visible-Light Photocatalysis

被引:21
|
作者
Haun, Graham [1 ]
Paneque, Alyson N. [1 ]
Almond, David W. [1 ]
Austin, Brooke E. [1 ]
Moura-Letts, Gustavo [1 ]
机构
[1] Rowan Univ, Dept Chem & Biochem, 201 Mullica Hill Rd, Glassboro, NJ 08028 USA
基金
美国国家科学基金会;
关键词
ENANTIOSELECTIVE 1,3-DIPOLAR CYCLOADDITION; OPTICALLY-ACTIVE ISOXAZOLIDINES; TRANSITION-METAL-COMPLEXES; TRANSFER RADICAL-ADDITION; ONE-POT SYNTHESIS; PHOTOREDOX CATALYSIS; AROMATIZATION SEQUENCE; ZETEKITOXIN-AB; ALKALOIDS; ALKENES;
D O I
10.1021/acs.orglett.9b00097
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
This effort reports the first redox-neutral visible-light photocatalytic intramolecular dipolar cycloaddition for the diastereoselective synthesis of chromenoisoxazolidines. The authors have found that alkenylphenyl nitrones with a diverse substitution pattern on the aromatic ring and the alkenyl substituent undergo visible-light-promoted cycloadditions in the presence of catalytic amounts of Ru(bpy)(3)Cl-2 in high yields and selectivities. Evidence indicates that the proposed redox-neutral pathway is the predominant photoredox mechanism for this transformation.
引用
收藏
页码:1388 / 1392
页数:5
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