A variety of primary and secondary amines give the conjugate reaction with β-nitroacrylates, via an anti-Michael addition, without any catalyst and/or solvent, allowing good yields of β-nitro-α-amino esters.
Continuous flow based catch and release protocol for the synthesis of α-ketoesters
作者:Alessandro Palmieri、Steven V Ley、Anastasios Polyzos、Mark Ladlow、Ian R Baxendale
DOI:10.3762/bjoc.5.23
日期:——
Using a combination of commercially available mesofluidic flow equipment and tubes packed with immobilised reagents and scavengers, a new synthesis of α-ketoesters is reported.
hydroalkylation of nitroalkenes and β-nitroacrylates via a photocatalytic strategy has been optimised under both batch and continuous flow conditions. This target has been achieved by exploiting the potentialities of the decatungstate anion as a versatile hydrogen atomtransfer (HAT) photocatalyst for the generation of alkyl radicals from aliphatic heterocycles, amides and cycloalkanes.