Tatsuya Shono,* Shigenori Kashimura, Yasuo Mori, Takashi Hayashi, Takeshi Soejima, and Yoshihide Yamaguchi Department of Synthetic Chemistry, Faculty of Engineering, Kyoto University, Yoshida, Sakyo, Kyoto 606, Japan Received June 21, 1989 ... Summary: Electroreductive coupling of ketones with a variety of olefins such as 1-olefins, dienes, and trienes afforded the corresponding tertiary alcohols in good yields and high regioselectivity.