Work

Fragment Couplings via CO2 Extrusion–Recombination: Expansion of a Classic Bond-Forming Strategy via Metallaphotoredox

Year: 2015

Type: article

Abstract: In this study we demonstrate that molecular fragments, which can be readily coupled via a simple, in situ RO-C═OR bond-forming reaction, can subsequently undergo metal insertion-decarboxylation-recombination to generate Csp(2)-Csp(3) bonds when subjected to metallaphotoredox catalysis. In this embodiment the conversion of a wide variety of mixed anhydrides (formed in situ from carboxylic acids and acyl chlorides) to fragment-coupled ketones is accomplished in good to high yield. A three-step synthesis of the medicinal agent edivoxetine is also described using this new decarboxylation-recombination protocol.

Source: Journal of the American Chemical Society

DOI: 10.1021/jacs.5b08304

Authors: Chi “Chip” Le, David W. C. MacMillan

Institution: Princeton University

Language: English

Topic: Radical Photochemical Reactions

Subfield: Organic Chemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: green

Funders: National Institutes of Health, National Institute of General Medical Sciences

Awards: Photoredox Catalysis Applications in Organometallics and Chemical Biology, G1588828791, G30908861