A Ligand/Additive/Base‐Free C(sp2)‐H Activation and Isocyanide Insertion in PEG‐400: Synthesis of Indolizine/Imidazoline‐Fused Heterocycles. Issue 17 (2nd May 2018)

• Record Type: Journal Article
• Authors: Kumar, K. Shiva; Rajesham, Bandari; Kumar, N. Praveen; Ramulu, Meesa Siddi; Dandela, Rambabu
• Is Part Of: ChemistrySelect. Volume 3:Issue 17(2018)
• Page Start: 4581
• Page End: 4585
• Publication Date: 2018-05-02
• Subjects: C−H activation -- isocyanide insertion -- heterocycles -- PEG-400 -- spectroscopic properties; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.201800397
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: A ligand/base/metal oxidant free Pd‐catalyzed C(sp 2 )–H activation, followed by isocyanide insertion to synthesize indolizine/imidazoline fused heterocyclics in PEG‐400 as a recyclable solvent. The present transformation is greener and an efficient strategy using oxygen as external oxidant. The spectroscopic properties of selected indolizine/imidazoline fused heterocyclics were studied by UV−visible and fluorescence spectroscopy. Abstract : An efficient method for the synthesis of indolizine/imidazoline fused heterocyclics via C(sp 2 )–H activation, followed by isocyanide insertion in PEG‐400. This transformation is a ligand/base/metal oxidant free and affording the desired products in good yields. The UV−vis absorption and fluorescence spectra of some products were measured to study their photophysical properties.