描述:1,8-Diazabicyclo[5.4.0]undec-7-ene is used in a new synthesis of the ABCD ring system of Camptothecin.(3) Halogenated Diels-Alder adducts were dehydrohalogenated with this base, and the resulting activated 2,4-dienones were subjected to regio- and stereo-directed Michael additions, us
应用:An amidine base used for dehydrohalogenation reactions to olefins