A degradative dimerisation of Morita–Baylis–Hillman ketones was observed in the presence of a primary diamine. The reaction proceeded swiftly to produce methylene-bridged 1,3-dicarbonyl compounds. A brief mechanistic investigation alluded to a retro-Mannich reaction as the key step of the transformation.
A. K. Jha, A. Kumari and S. Easwar, Chem. Commun., 2020, 56, 2949 DOI: 10.1039/C9CC10068G
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