Unlvorslty of Selones and Teehnoloy of China 例如： CH3 CH3 -H 175℃ H 顺.反.异构体为主 CH3 反.反.仅占0.005% -H CH3 H CH3 CH3 -H 175℃ 反.反.为主 H -CH3 H CH3 Organic ChemUniversity of Science and Technology of China Organic Chem 例如： CH3 H CH3 CH3 H H CH3 H 175℃ CH3 H H CH3 H H CH3 CH3 175℃ 顺 . 反. 异构体为主 反 . 反 . 仅占0.005％ 反 . 反 . 为主