The Gilman reagent Ph2CuLi and higher-order Ph3CuLi2: carbon-13 and lithium-6 NMR in dimethyl sulfide
SH Bertz, G Dabbagh
Index: Bertz, Steven H.; Dabbagh, Gary Journal of the American Chemical Society, 1988 , vol. 110, p. 3668 - 3670
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Citation Number: 53
Abstract
Higher order organocupratesZa have recently joined the classical Gilman reagentsZb at the forefront of synthetic methodology. While “Me3CuLi2” had been postulated as a reactive intermediate, Lipshutz et al. showed by means of 'H and'Li NMR that the addition of MeLi to Me, CuLi does not form a higher order species, Le., the reagent is merely Me2CuLi+ MeLi? In contrast, to within the limits of NMR detection, free MeLi is not present in the higher ...
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