Organomanganese (II) reagents XIX. Acylation of organomanganese chlorides by carboxylic acid chlorides in THF: A clear improvement in the field of the preparation of ketones from organomanganese compounds
作者:Gérard Cahiez、Blandine Laboue
DOI:10.1016/s0040-4039(00)70699-x
日期:1989.1
Organomanganese chloride reagents react with carboxylic acid chlorides, in THF, to give the corresponding ketones in excellent yields. The reaction is of broad scope, it is very interesting from practical and economical point of view since organomanganese chlorides (in THF) are the most stable and cheap organomanganese reagents. With methyl, aryl, alkenyl and s- or t-alkylmanganese chlorides, the acylation
Highly chemo- and stereoselective Fe-catalyzed alkenylation of organomanganese reagents
作者:Gérard Cahiez、Sophie Marquais
DOI:10.1016/0040-4039(96)00116-5
日期:1996.3
Organomanganese chlorides react with alkenyl iodides, bromides and chlorides in the presence of 3% Fe(acac)3. The reaction takes place under very mild conditions (THF-NMP, rt, 1h) to afford the substituted olefin in excellent yields with a high stereo- and chemoselectivity. Thus an unprotected keto alkenyl chloride selectively gives the corresponding keto olefin. From a preparative point of view, this
Organomanganese (II) reagents XVI1: copper-catalyzed 1,4-addition of organomanganese chlorides to conjugated enones
作者:Gérard Cahiez、Mouad Alami
DOI:10.1016/s0040-4039(00)99434-6
日期:1989.1
Copper-catalyzed conjugate addition of organomanganese chlorides to conjugated enones in THF, at 0°C, leads to the 1,4 addition products in high yields. The scope of the reaction is very large and the results are generally better than those obtained from organomagnesium compounds in the presence of a copper salt as well as from organocopper or cuprate reagents. Furthermore organomanganese chlorides are indisputably