Reductive homo-coupling of methyl 2-Br-2-Cl-carboxylates promoted by CuBrFe0
摘要:
Dimethyl 2,3-dialkyl-2,3-dichloro-butanedioates are efficiently prepared in dimethylformamide or dimethylsulphoxide, through reductive homo-coupling of methyl 2-bromo-2-chlorocarboxylates promoted by CuBr-Fe-0.
The CuBr/Fe<sup>0</sup>Promoted Radical Addition of Methyl 2-Br-2-Cl-Carboxylates to OLEFINS
作者:Luca Forti、Franco Ghelfi、Massimiliano Lodi Lancellotti、Ugo M. Pagnoni
DOI:10.1080/00397919608002609
日期:1996.5
Abstract Methyl 2-Br-2-Cl-carboxylates afford 2-alkyl-2-Cl-4-Br-carboxylates in fair yields by reaction with terminal alkenes, under mild conditions, through a radical process promoted by CuBr/Fe0 in DMF/CH2C12.
Fe0 initiated halogen atom transfer radical addition of methyl 2-Br-2-Cl-carboxylates to olefins
作者:Luca Forti、Franco Ghelfi、Ugo M. Pagnoni
DOI:10.1016/0040-4039(96)00196-7
日期:1996.3
The halogen atom transfer radicaladdition (HATRA) of methyl 2-Br-2-Cl-carboxylates to alkenes is obtained in good yields by catalytic amounts of iron filings in dimethylformamide/1,2-dichloroethane at 80°C under argon.
Zinc Promoted Addition of Methyl 2,2-Dihalocarboxylates to Carbonyl Compounds
作者:Marta Benincasa、Luca Forti、Franco Ghelfi、Emanuela Libertini、Ugo M. Pagnoni
DOI:10.1080/00397919608004648
日期:1996.11
Abstract Methyl2,2-dihalocarboxylates add easily to carbonyl compounds in fair to good yields through the intermediate formation of 2-haloester enolates; the reaction is promoted by zinc, following a “Barbier” type procedure.