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Demonstrates enhanced carbonate synthesis in organic reactions, suggesting efficient CO2 utilization.
Getting a fix: N-heterocyclic carbenes (NHCs) and NHC-CO(2) adducts serve as potent organocatalysts for carbonate synthesis by the addition of a CO(2) unit to propargylic alcohols or epoxides under mild and solvent-free reaction conditions (see scheme). The enhanced Lewis basicity of imidazol-2-ylidenes bearing electron-donating alkyl groups on the nitrogen atoms leads to utilizing CO(2) as a nucleophilic fragment in the chemical fixation processes.
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Kayaki et al. (2009) studied this question.
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