Pd/C, a widely accepted hydrogenation catalyst, is found to catalytically dehydrogenate 2-cinnamoylbenzoic acids to 3-benzylidene-3-H-isochroman-1,4-diones with H2 as the only byproduct. This synthetic reaction proceeds without oxidants and hydrogen acceptors, thereby representing an atom- and step-efficient approach to a wide range of functionalized 3-benzylidene-3H-isochroman-1,4-diones.
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| http://dx.doi.org/10.1039/c8cc03402h | DOI Listing |
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