Hangzhou Normal University 1 article published in JoVE Chemistry Facile Preparation of (2Z,4E)-Dienamides by the Olefination of Electron-deficient Alkenes with Allyl Acetate Liyuan Ding1, Chunbing Yu1, Zhenqiang Zhao2, Feifei Li1, Jian Zhang1, Guofu Zhong1 1College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, 2Shijiazhuang Mechanized Infantry Academy The ruthenium-catalyzed olefination of electron-deficient alkenes with allyl acetate is described here. By using aminocarbonyl as a directing group, this external oxidant-free protocol has high efficiency and good stereo- and regioselectivity, opening a novel synthetic route to (Z,E)-butadiene skeletons.