Kayahara, Eiichi published the artcileGeneration of Carbanions through Stibine-Metal and Bismuthine-Metal Exchange Reactions and Its Applications to Precision Synthesis of ω-End-Functionalized Polymers, Related Products of esters-buliding-blocks, the main research area is stibine metal exchange reaction carbanion generation; polyhydroxyethyl methacrylate terminal functionalization stibine metal exchange reaction; polyisopropylacrylamide terminal functionalization stibine metal exchange reaction; polybutyl acrylate terminal functionalization stibine metal exchange reaction; PMMA terminal functionalization stibine metal exchange reaction; magnesium stibine exchange reaction carbanion generation; zinc stibine exchange reaction carbanion generation; bismuthine metal exchange reaction carbanion generation; lithium stibine exchange reaction carbanion generation.
Generation of carbanions from organostibines and organobismuthines through heteroatom-metal exchange reactions was examined from synthetic and mechanistic viewpoints. The exchange reaction proceeded spontaneously upon treatment with various organometallic reagents, such as alkyllithiums, tetraalkylzincates, and alkylmagnesium halides to afford the corresponding carbanions quant. Due to the high reactivity of these heteroatom compounds, the exchange reactions took place exclusively even in the presence of various polar functional groups, which potentially react with organometallic species. The advantage of this method was exemplified by the end-group transformation of living polymers that bear these heteroatom species at the ω-polymer end, prepared by using organostibine- and bismuthine-mediated living radical polymerizations Various polymers that bear polar functional groups and acidic hydrogen-for example, poly(Me methacrylate), poly(Bu acrylate), poly(N-iso-Pr acrylamide), and poly(2-hydroxyethyl methacrylate)-could be used in the exchange reactions, and subsequent trapping with electrophiles afforded the corresponding polymers with controlled mol. weights, mol. weight distributions, and end-group functionalities. Competition experiments showed that organostibines and organobismuthines were among the most reactive heteroatom compounds towards organometallic reagents and that their high reactivity was responsible for the high chemoselectivity in the exchange reaction.
Chemistry – A European Journal published new progress about Carbanions Role: SPN (Synthetic Preparation), PREP (Preparation). 86549-27-1 belongs to class esters-buliding-blocks, name is Ethyl 2,2-dimethylpent-4-enoate, and the molecular formula is C9H16O2, Related Products of esters-buliding-blocks.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics