Norbornene derivatives 7–11 were prepared from norbornadiene and the corresponding diynes by Ru-catalyzed [(2+2)+2] cycloaddition and subsequent transfer hydrogenation. The structure and stereochemistry of the cycloadducts were confirmed by X-ray crystal analysis. This procedure provides high diastereoselectivity to generate norbornenes 7–11 in up to 82 % yield. The scope and limitations of this reaction