Efficient Synthesis of Conjugated (2E)- or (2Z)-En-4-ynoic Acids and (2E,4E)- or (2Z,4E)-Dienoic Acids via Palladium-Catalysed Cross Coupling - Abarbri, Mohamed; Parrain, Jean-Luc; Cintrat, Jean-Christophe; Duchêne, Alain (Synthesis, 1996)