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.
Preparation of 2,2-Dihalocarboxylic Acid Methyl Esters by Oxidation–Chlorination of 2-(1-Haloalkyl)-4-methyl-1,3-dioxolanes with Trichloroisocyanuric Acid
作者:Monica Boni、Franco Ghelfi、Ugo Maria Pagnoni、Claudia Zucchi
DOI:10.1246/bcsj.67.1622
日期:1994.6
Methyl 2,2-dichloro or 2-bromo-2-chloro carboxylates were obtained in excellent yields by oxidation–chlorination of 2-(1-haloalkyl)-4-methyl-1,3-dioxolanes with trichloroisocyanuric acid.
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.
The CuBr/Fe promoted olefin alkylation by 2-Br-2-Cl-carboxylate methyl esters
作者:Luca Forti、Franco Ghelfi、Ugo M. Pagnoni
DOI:10.1016/0040-4039(95)00256-c
日期:1995.4
Methyl 2-Br-2-Cl-carboxylates react with 1-octene in DMF/CH2Cl2 in a radical process promoted by CuBr/Fe, yielding 2-alkyl-2-Cl-4-Br-carboxylates smoothly and efficiently.