Abstract
Thiocarbonyldiimidazole has been found to be an efficient acid activator for the synthesis of β-lactams by ketene-imine cycloaddition at room temperature. The experimental procedure is simple and results in excellent yields of the products. All products were characterized by spectral data and elemental analyses.
GRAPHICAL ABSTRACT
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ACKNOWLEDGMENT
The authors thank the Islamic Azad University (Firoozabad Branch) Research Council for financial support.