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Volumn 9, Issue 17, 2007, Pages 3319-3322

An unprecedented Pd-catalyzed, water-promoted sequential oxidative aminocarbonylation-cyclocarbonylation process leading to 2-oxazolidinones

Author keywords

[No Author keywords available]

Indexed keywords

OXAZOLIDINONE DERIVATIVE; PALLADIUM; WATER;

EID: 34548190050     PISSN: 15237060     EISSN: None     Source Type: Journal    
DOI: 10.1021/ol071332c     Document Type: Article
Times cited : (64)

References (32)
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    • Mukhtar, T.A.1    Wright, G.D.2
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    • (2003) Idrugs , vol.6 , pp. 240-245
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    • We have recently reported the synthesis of 4,4-dialkyl-5, methoxy- carbonylmethylene]oxazolidin-2-ones by Pd-catalyzed sequential oxidative carboxylation-methoxycarbonylation of α,α-dialkyl substituted 2-ynyl-amines: (a) Bacchi, A, Chiusoli, G. P, Costa, M, Gabriele, B, Righi, C, Salerno, G. Chem. Commun. 1997, 1209-1210
    • We have recently reported the synthesis of 4,4-dialkyl-5-[(methoxy- carbonyl)methylene]oxazolidin-2-ones by Pd-catalyzed sequential oxidative carboxylation-methoxycarbonylation of α,α-dialkyl substituted 2-ynyl-amines: (a) Bacchi, A.; Chiusoli, G. P.; Costa, M.; Gabriele, B.; Righi, C.; Salerno, G. Chem. Commun. 1997, 1209-1210.
  • 19
    • 0033536273 scopus 로고    scopus 로고
    • Chiusoli, G. P.; Costa, M.; Gabriele, B.; Salerno, G. J. Mol. Catal. A: Chem. 1999, 143, 297-310. In that reaction, carbon dioxide was incorporated into the cycle, while carbon monoxide was incorporated into the (methoxycarbony1)methylene moiety, so the process was completely different from that described in the present work, in which both the carbonyl groups present in the final product derive from carbon monoxide. The direct formation of 5-methylene-2-oxazolidinones by carboxylation of 2-ynylamines has also been reported; see, for example:
    • (b) Chiusoli, G. P.; Costa, M.; Gabriele, B.; Salerno, G. J. Mol. Catal. A: Chem. 1999, 143, 297-310. In that reaction, carbon dioxide was incorporated into the cycle, while carbon monoxide was incorporated into the (methoxycarbony1)methylene moiety, so the process was completely different from that described in the present work, in which both the carbonyl groups present in the final product derive from carbon monoxide. The direct formation of 5-methylene-2-oxazolidinones by carboxylation of 2-ynylamines has also been reported; see, for example:
  • 22
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    • For recent reviews on sequential catalysis, see: a
    • For recent reviews on sequential catalysis, see: (a) Wasilke, J.-C.; Obrey, S. J.; Baker, R. T.; Bazan, G. C. Chem. Rev. 2005, 105, 1001-1020.
    • (2005) Chem. Rev , vol.105 , pp. 1001-1020
    • Wasilke, J.-C.1    Obrey, S.J.2    Baker, R.T.3    Bazan, G.C.4
  • 24
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    • Fogg, D. E.; dos Santos, E. N. Coord. Chem. Rev. 2004, 248, 2365-2379. See also:
    • (c) Fogg, D. E.; dos Santos, E. N. Coord. Chem. Rev. 2004, 248, 2365-2379. See also:
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    • -2 mmol), KI (70.0 mg, 0.42 mmol), and a solution of 1 (4.2 mmol) and the amine 2 (21.0 mmol) in DME (8.4 mL). Water (380 mL, 21.1 mmol) was then added, and the autoclave was sealed. While the mixture was stirred, the autoclave was charged with CO (16 atm) and air (up to 20 atm), and then heated at 100 °C with stirring for the required time. After cooling, the autoclave was degassed and opened. The solvent was evaporated, and the products were purified by column chromatography on neutral alumina using suitable hexane-AcOEt mixtures as eluent (see the Supporting Information for further details).
    • -2 mmol), KI (70.0 mg, 0.42 mmol), and a solution of 1 (4.2 mmol) and the amine 2 (21.0 mmol) in DME (8.4 mL). Water (380 mL, 21.1 mmol) was then added, and the autoclave was sealed. While the mixture was stirred, the autoclave was charged with CO (16 atm) and air (up to 20 atm), and then heated at 100 °C with stirring for the required time. After cooling, the autoclave was degassed and opened. The solvent was evaporated, and the products were purified by column chromatography on neutral alumina using suitable hexane-AcOEt mixtures as eluent (see the Supporting Information for further details).
  • 29
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    • Primary amines afforded the corresponding symmetrical ureas, according to a reactivity that we have already reported: Gabriele, B.; Salerno, G.; Mancuso, R.; Costa, M. J. Org. Chem. 2004, 69, 4741-4750.
    • Primary amines afforded the corresponding symmetrical ureas, according to a reactivity that we have already reported: Gabriele, B.; Salerno, G.; Mancuso, R.; Costa, M. J. Org. Chem. 2004, 69, 4741-4750.
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    • The reaction of simple, unsubstituted benzylprop-2-ynylamine led to a complex mixture of unidentified, chromatographically immobile materials
    • The reaction of simple, unsubstituted benzylprop-2-ynylamine led to a complex mixture of unidentified, chromatographically immobile materials.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.