Nitropyrazoles are famous powerful energetic materials. Herein we revisited the concept of alkyl-bridged nitropyrazoles to gain insight into structure-property relationships. The exchange of explosophoric functional groups and modification of alk...
Artikel
Visible‐Light‐Induced Insertion of Sulfur Dioxide Mediated by Electron Donor–Acceptor Complex: Synthesis and Photophysical Properties of 3‐Sulfonyl Indolizines
Von Wiley-VCH zur Verfügung gestellt
The first examples of visible-light-mediated, photocatalyst-free sulfonylation of indolizines are developed thanks to an electron donor–acceptor complex approach. The formation of two new C−S bonds, without further pre-functionnalization, in metal-free and mild conditions renders this three-component approach sustainable and green. The newly 3-sulfonylated indolizines show promising photophysical properties with high fluorescence and large Stokes shifts.
Abstract
This work investigates a light-driven 3-component sulfonylation reaction of indolizines without needing any external photocatalyst. The mechanistic investigations support the formation of an electron donor–acceptor (EDA) complex in situ. This transformation offers a mild and sustainable approach with high functional group tolerance for the synthesis of 3-sulfonylated indolizines. This compound class has valuable photophysical properties and represents promising candidates in various applications related to fluorescence.
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