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Asymmetric Bromine–Lithium Exchange: Application toward the Synthesis of Natural Product

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Published in Organic Letters. 2013, vol. 15, no. 16, p. 4270-4273
Abstract Asymmetric bromine–lithium exchange has been successfully employed to synthesize bicoumarin chiral building blocks of (+)-isokotanin A and (−)-kotanin in good yields and with an excellent level of enantioselectivity. This is the first reported example of formal syntheses, using this direct methodology, leading to the single (M)-atropoisomer of (+)-isokotanin A and (−)-kotanin building blocks, without any resolution step.
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Other version: http://pubs.acs.org/doi/abs/10.1021/ol4021157
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GRAFF, Julien et al. Asymmetric Bromine–Lithium Exchange: Application toward the Synthesis of Natural Product. In: Organic Letters, 2013, vol. 15, n° 16, p. 4270-4273. https://archive-ouverte.unige.ch/unige:29559

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Deposited on : 2013-09-04

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