A Ligand/Additive/Base-Free C(sp(2))-H Activation and Isocyanide Insertion in PEG-400: Synthesis of Indolizine/Imidazoline-Fused Heterocycles

K. Shiva Kumar,Bandari Rajesham,N. Praveen Kumar,Meesa Siddi Ramulu,Rambabu Dandela

CHEMISTRYSELECT（2018）

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摘要

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.

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关键词

C-H activation,isocyanide insertion,heterocycles,PEG-400,spectroscopic properties

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