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.
Bromoarylation of Methyl 2-Chloroacrylate under Meerwein Conditions for the Synthesis of Substituted 3-Hydroxythiophenes
作者:Yurii V. Ostapiuk、Andreas Schmidt、Maksym Shehedyn、Oksana V. Barabash、Bohdan Demydchuk、Sviatoslav Batsyts、Colin Herzberger
DOI:10.1055/s-0040-1719849
日期:2022.2
Methyl 3-aryl-2-bromo-2-chloropropanoates can be prepared by Meerwein reaction from methyl 2-chloroacrylate and various arenediazonium salts under copper(II) bromide catalysis. The resulting readily available compounds were used as starting materials in reactions with substituted methanethiols for the construction of substituted 3-hydroxythiophenes which have not yet been accessible by other routes