Thermolysis of bis-thiocarbamates derived from but-3-yne-1,2-diols resulted in the formation of buta-1,3-dienes with carbamoylthio groups in positions 1 and 2 with good to excellent yields. The stereochemistry of the products is controlled by substituents at C-1 of the starting material and can be explained by chair-like reacting conformations.
衍生自丁-3-炔-1,2
-二醇的双
硫代
氨基甲酸酯的热分解导致形成1位和2位带有
氨基甲
硫基基团的丁1,3-二烯,收率好至极好。产物的立体
化学受起始材料C-1处的取代基控制,可以用椅子样反应构象解释。