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Palladium-catalysed direct cross-coupling of secondary alkyllithium reagents
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Palladium-catalysed direct cross-coupling of secondary alkyllithium reagents
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| Vila Descals, Carlos; Giannerini, Massimo; Hornillos, Valentín; Fañanás-Mastral, Martín; Feringa, Ben L. | |||
| Aquest document és un/a article, creat/da en: 2014 | |||
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| Palladium-catalysed cross-coupling of secondary C(sp3) organometallic reagents has been a long-standing challenge in organic synthesis, due to the problems associated with undesired isomerisation or the formation of reduction products. Based on our recently developed catalytic C-C bond formation with organolithium reagents, herein we present a Pd-catalysed cross-coupling of secondary alkyllithium reagents with aryl and alkenyl bromides. The reaction proceeds at room temperature and on short timescales with high selectivity and yields. This methodology is also applicable to hindered aryl bromides, which are a major challenge in the field of metal catalysed cross-coupling reactions. | |||
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23 - Química [1060]