2014
DOI: 10.1039/c4cc00340c
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A second-generation ligand for the enantioselective rhodium-catalyzed addition of arylboronic acids to alkenylazaarenes

Abstract: (2014) A second-generation ligand for the enantioselective rhodium-catalyzed addition of arylboronic acids to alkenylazaarenes. Chemical Communications, 50 (22).

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Cited by 67 publications
(28 citation statements)
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References 38 publications
(7 reference statements)
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“…In 2014, Lam reported the enantioselective rhodium-catalyzed addition of arylboronic acids 116 to alkenyl azaarenes 115 using a 2,4,6-triisopropylanilide-containing chiral diene ligand XIII (Scheme 29). [23] This report represents an improvement of the previous reaction conducted with a compound containing (2S)-(2,5-dimethylpyrrol-1-yl)-(1S)-cyclohexylamine as the amino group of the ligand. [24] The azaarene group spans from monocyclic oxazole, 1,2,4oxadiazole, 1,3,4-oxadiazole, pyrimidine, pyrazine, triazine, to bicyclic compound as quinoline, quinazoline, benzoxazole, and benzothiazole.…”
Section: Unsaturated Alkyl Azaarenesmentioning
confidence: 83%
“…In 2014, Lam reported the enantioselective rhodium-catalyzed addition of arylboronic acids 116 to alkenyl azaarenes 115 using a 2,4,6-triisopropylanilide-containing chiral diene ligand XIII (Scheme 29). [23] This report represents an improvement of the previous reaction conducted with a compound containing (2S)-(2,5-dimethylpyrrol-1-yl)-(1S)-cyclohexylamine as the amino group of the ligand. [24] The azaarene group spans from monocyclic oxazole, 1,2,4oxadiazole, 1,3,4-oxadiazole, pyrimidine, pyrazine, triazine, to bicyclic compound as quinoline, quinazoline, benzoxazole, and benzothiazole.…”
Section: Unsaturated Alkyl Azaarenesmentioning
confidence: 83%
“…Very recently, chiral diene‐containing amide functional groups were shown to be effective ligands. For example, Lam and co‐workers reported the asymmetric arylation of alkenylazaarenes in the presence of a Rh I catalyst featuring chiral diene ligand L2 b with a secondary amide functional group (Scheme b) . Kobayashi showed that the chiral diene analogue L2 c displayed high catalytic activity and selectivity when utilized in conjunction with a heterogeneous chiral Rh I ‐nanoparticle system, for both the asymmetric arylation of α,β‐unsaturated carbonyl compounds (Scheme c) and of N ‐tosyl imines (Scheme d) .…”
Section: Resultsmentioning
confidence: 99%
“…Im Anschluss daran widmeten wir uns der enantioselektiven Va riante (Tabelle 1). [6][7][8][9][10]. Die Modellreaktion von 1a und Me 2 PhSiMgHal wurde von einer Kombination aus CuBr·SMe 2 /(R,S p )-15 und BF 3 ·OEt 2 in Toluol vermittelt und erbrachte (S)-8a in 70 %A usbeute und mit einem Enantiomerenverhältnis (e.r.)…”
Section: Zuschriftenunclassified
“…[4] Alle diese Methoden greifen auf Silylboronsäureester [5] als Siliciumpronukleophile zurück. [7] Unsere Bemühungen waren von den richtungweisenden Arbeiten der Gruppen um Lautens [8] und Lam [9] zur rhodiumkatalysierten regioselektiven Addition von Arylboronsäuren an diese Akzeptoren angeregt worden, wobei sowohl racemische [8,10] als auch enantioselektive Va rianten [9] beschrieben wurden. [7] Unsere Bemühungen waren von den richtungweisenden Arbeiten der Gruppen um Lautens [8] und Lam [9] zur rhodiumkatalysierten regioselektiven Addition von Arylboronsäuren an diese Akzeptoren angeregt worden, wobei sowohl racemische [8,10] als auch enantioselektive Va rianten [9] beschrieben wurden.…”
unclassified
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