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Palladium-catalyzed coupling of 2-en-4-yne carbonates with terminal alkynes
The first palladium-catalysed coupling of the carbonates of (E)-configured conjugated enynols with terminal alkynes is described. This method allows the synthesis of vinyl-allenynes with good yields. It has been determined that the method is not suitable for the (Z)-configured substrates. (C) 2018 Published by Elsevier Ltd.