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. 2015 Feb 5;6:6207. doi: 10.1038/ncomms7207

Figure 1. NHC-catalysed cyclization via carbon–carbon bond activation of ketones.

Figure 1

(a) Metal-catalysed activation of carbon–carbon bond. (b) Our synthetic proposal via an organocatalysis. NHCs react with cyclobutenone to generate chiral vinylenolate intermediate to give novel formal cycloaddition reactions.