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Synthesis of Isoxazolidines from Substituted Vinylnitrones and Conjugated Carbonyls via Visible-Light Photocatalysis
被引:2
|作者:
Trieu, Phillip
[1
]
Filkin, William H.
[1
]
Pinarci, Ali
[1
]
Tobias, Elisa M.
[1
]
Madiu, Rufai
[1
]
Dellosso, Brandon
[1
]
Roldan, Justin
[1
]
Das, Pulakesh
[1
]
Austin, Brooke E.
[1
]
Moura-Letts, Gustavo
[1
]
机构:
[1] Rowan Univ, Dept Chem & Biochem, 201 Mull Hill Rd, Glassboro, NJ 08028 USA
基金:
美国国家科学基金会;
关键词:
dipolar cycloadditions;
heterocycles;
isoxazolidines;
photocatalysis;
vinyl nitrones;
TRANSFER RADICAL-ADDITION;
ONE-POT SYNTHESIS;
1,3-DIPOLAR CYCLOADDITION;
PHOTOREDOX CATALYSIS;
ZETEKITOXIN-AB;
METHACROLEIN;
NITROSOARENES;
2H-AZIRINES;
NITRONES;
ALKENES;
D O I:
10.1002/cptc.202200277
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
Herein we report the first redox-neutral visible-light photocatalytic intermolecular dipolar cycloaddition for the diastereoselective synthesis of isoxazolidines. We have found that vinyl nitrones with a diverse substitution pattern undergo visible-light-promoted cycloadditions with conjugated carbonyls in the presence of catalytic amounts of Ru(bpy)(3)Cl-2, with the reaction proceeding with high yields and good selectivities. A redox-neutral pathway is proposed as the primary photoredox mechanism for this transformation.
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页数:5
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