Matches in SemOpenAlex for { <https://semopenalex.org/work/W3201608441> ?p ?o ?g. }
- W3201608441 endingPage "15959" @default.
- W3201608441 startingPage "15946" @default.
- W3201608441 abstract "Molecules displaying an α-trialkyl-α-tertiary amine motif provide access to an important and versatile area of biologically relevant chemical space but are challenging to access through existing synthetic methods. Here, we report an operationally straightforward, multicomponent protocol for the synthesis of a range of functionally and structurally diverse α-trialkyl-α-tertiary amines, which makes use of three readily available components: dialkyl ketones, benzylamines, and alkenes. The strategy relies on the of use visible-light-mediated photocatalysis with readily available Ir(III) complexes to bring about single-electron reduction of an all-alkyl ketimine species to an α-amino radical intermediate; the α-amino radical undergoes Giese-type addition with a variety of alkenes to forge the α-trialkyl-α-tertiary amine center. The mechanism of this process is believed to proceed through an overall redox neutral pathway that involves photocatalytic redox-relay of the imine, generated from the starting amine-ketone condensation, through to an imine-derived product. This is possible because the presence of a benzylic amine component in the intermediate scaffold drives a 1,5-hydrogen atom transfer step after the Giese addition to form a stable benzylic α-amino radical, which is able to close the photocatalytic cycle. These studies detail the evolution of the reaction platform, an extensive investigation of the substrate scope, and preliminary investigation of some of the mechanistic features of this distinct photocatalytic process. We believe this transformation will provide convenient access to previously unexplored α-trialkyl-α-tertiary amine scaffolds that should be of considerable interest to practitioners of synthetic and medicinal chemistry in academic and industrial institutions." @default.
- W3201608441 created "2021-09-27" @default.
- W3201608441 creator A5024465074 @default.
- W3201608441 creator A5055383226 @default.
- W3201608441 creator A5069606411 @default.
- W3201608441 creator A5088673084 @default.
- W3201608441 date "2021-09-22" @default.
- W3201608441 modified "2023-10-10" @default.
- W3201608441 title "Modular Photocatalytic Synthesis of α-Trialkyl-α-Tertiary Amines" @default.
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