A polymeric ionic liquid catalyst for the N-formylation and N-methylation of amines using CO2/PhSiH3

Gopakumar, AswinLombardo, LorisFei, ZhaofuShyshkanov, SerhiiVasilyev, DmitryChidambaram, ArunrajStylianou, KyriakosZüttel, AndreasDyson, Paul Joseph2020-08-112020-08-112020-08-112020-07-0810.1016/j.jcou.2020.101240https://infoscience.epfl.ch/handle/20.500.14299/170775We describe a polymeric ionic liquid (PIL) derived from trimethyl(p-vinylbenzyl)ammonium chloride ([VBTAm]Cl) that efficiently catalyzes the N-formylation of amines employing CO2 and PhSiH3 at room temperature with low catalyst loadings in near-quantitative yield. Under more forcing conditions N-methylated products can be selectively obtained. The PIL catalyst can be easily recovered and reused repeatedly without a decrease in activity. The reaction mechanism was studied in situ using high-pressure NMR spectroscopy and a tentative mechanistic cycle has been proposed.A polymeric ionic liquid catalyst for the N-formylation and N-methylation of amines using CO2/PhSiH3text::journal::journal article::research article