2012
DOI: 10.1002/anie.201203449
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N‐Heterocyclic Carbene Catalyzed Homoenolate‐Addition Reaction of Enals and Nitroalkenes: Asymmetric Synthesis of 5‐Carbon‐Synthon δ‐Nitroesters

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Cited by 70 publications
(32 citation statements)
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“…177 Liu and co-workers found chiral NHC ent - A 7 provides product in 48–86 % yield, 81–99 % ee, and 4:1 to 12:1 dr favoring the anti isomer. 177a A variety of nitrostyrene derivatives, including nitro dienes and nitroenynes, were coupled with aryl and aliphatic enals (Scheme 108). …”
Section: Catalysis Involving Extended Breslow Intermediatesmentioning
confidence: 99%
See 1 more Smart Citation
“…177 Liu and co-workers found chiral NHC ent - A 7 provides product in 48–86 % yield, 81–99 % ee, and 4:1 to 12:1 dr favoring the anti isomer. 177a A variety of nitrostyrene derivatives, including nitro dienes and nitroenynes, were coupled with aryl and aliphatic enals (Scheme 108). …”
Section: Catalysis Involving Extended Breslow Intermediatesmentioning
confidence: 99%
“…177b Rovis also reported a one-pot protocol for the synthesis of δ-lactams via a reductive workup of the δ-nitroester (Scheme 109). …”
Section: Catalysis Involving Extended Breslow Intermediatesmentioning
confidence: 99%
“…19 Enantioselective variations, using chiral triazolium precatalysts, were reported by the Rovis and Liu groups, respectively, in 2013 and 2012. 20,21 Liu's precatalyst, 4 , favors the anti isomer, while Rovis' precatalyst 5 favors the syn isomer. The difference in diastereoselectivity is proposed to arise from a difference in the Breslow intermediate geometry.…”
Section: Resultsmentioning
confidence: 99%
“…Daraufhin wurde die Reaktion von NHC-Homoenolaten mit verschiedenen reaktiven Elektrophilen untersucht, um präparativ wertvolle cyclische [4][5][6][7] und auch acyclische [8] Molekülstruk-turen zu erhalten. Die Gruppen um Nair und Bode haben dann über eine [3+2]-Anellierung von Enalen mit cyclischen Dienonen durch eine Sequenz aus konjugierter Addition und Cyclisierung berichtet, die Cyclopentanone generiert.…”
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