PAWAR, Govind Goroba; ROBERT, Frédéric; GRAU, Etienne; CRAMAIL, Henri; LANDAIS, Yannick

doi:10.1039/c8cc05462b

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PAWAR, Govind Goroba

ROBERT, Frédéric
Institut des Sciences Moléculaires [ISM]

GRAU, Etienne

Laboratoire de Chimie des Polymères Organiques [LCPO]

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Chemical Communications. 2018, vol. 54, n° 67, p. 9337 - 9340

Royal Society of Chemistry

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A sustainable metal-free route to urethanes and ureas based on a photocatalyzed oxidative decarboxylation of oxamic acids is described. The reaction includes in situ generation of an isocyanate from the oxamic acid, using an organic dye as a photocatalyst, a hypervalent iodine reagent as an oxidant and a light source, which trigger the free-radical decarboxylation. This protocol successfully avoids the isolation, purification and storage of carcinogenic isocyanates and allows elaboration of urethanes and ureas in a one-pot process from commercially available sources.< Leer menos

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Visible-light photocatalyzed oxidative decarboxylation of oxamic acids: a green route to urethanes and ureas

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