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A fast and efficient one-step approach to the synthesis of dienamides is reported. This concise methodology relies on the use of imides as reactive intermediates and allows for the preferential formation of Z,E-dienamides in good yields.
In the crystal structure of the title compound, C13H10O3, the molecules form classical hydrogen-bonded carboxylic acid dimers [O⋯O = 2.651 (2) A]. These dimers are linked by C—H⋯π and π–π interactions to give a three-dimensional network.