CuI/N,N-Dimethylglycine-Catalyzed Coupling of Vinyl Halides with Amides or Carbamates
摘要:
The Cul-catalyzed coupling reaction of vinyl halides with amides or carbamates proceeds well at room temperature to 80 degreesC in dioxane to give enamides using NN-dimethylglycine as the promoter and Cs2CO3 as the base. The geometry of the C-C double bond is retained during the reaction course.
The addition of xanthates and vinyldisulfones across the double bond of enamides and ene-carbamates provides access to the corresponding three.. component adducts in good to excellent yields with a high level of diastereocontrol in cyclic systems. This strategy illustrates a complementary reactivity for these versatile olefins and extends their scope of application.
US3975534A
申请人:——
公开号:US3975534A
公开(公告)日:1976-08-17
[DE] VERWENDUNG VON PYRAZOLOXIMEN ALS PARASITIZIDE<br/>[EN] USE OF PYRAZOL OXIMES AS PARASITICIDES<br/>[FR] UTILISATION D'OXIMES DE PYRAZOLE POUR LUTTER CONTRE LES PARASITES
申请人:BAYER AG
公开号:WO2002050042A2
公开(公告)日:2002-06-27
Die vorliegende Erfindung betrifft die Verwendung von Pyrazoloximen zur Bekämpfung von parasitierenden Arthropoden, insbesondere von Flöhen, an Tieren sowie neue dermal applizierbare pharmazeutische Formulierungen.