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Heterocyclic Spiranes and Dispiranes via Enantioselective Phosphine-Catalyzed [3+2]?Annulations
被引:42
|作者:
Duvvuru, Deepti
[1
]
Pinto, Nathalie
[1
]
Gomez, Catherine
[1
]
Betzer, Jean-Francois
[1
]
Retailleau, Pascal
[1
]
Voituriez, Arnaud
[1
]
Marinetti, Angela
[1
]
机构:
[1] Ctr Rech Gif, CNRS, UPR 2301, Inst Chim Subst Nat, F-91198 Gif Sur Yvette, France
关键词:
3+2]?cyclization;
enantioselective organocatalysis;
phosphines;
spiro compounds;
sulfoxides;
ASYMMETRIC 3+2 CYCLOADDITION;
ELECTRON-DEFICIENT OLEFINS;
FUNCTIONALIZED CYCLOPENTENES;
ANTIMYCOBACTERIAL EVALUATION;
1,3-DIPOLAR CYCLOADDITION;
CONTAINING LIGANDS;
GLUTAMATE ANALOGS;
CYCLIZATIONS;
SULFOXIDES;
EFFICIENT;
D O I:
10.1002/adsc.201100748
中图分类号:
O69 [应用化学];
学科分类号:
081704 ;
摘要:
The synthesis of highly functionalized heterocyclic spiranes has been carried out by [3+2] cyclizations between allenoates and enones, under phosphine catalysis. Excellent enantioselectivity levels (ees up to 99%) have been attained in FerroPHANE-promoted cyclizations of this class, leading to chiral sulfides with unprecedented spiranic structures. The corresponding sulfoxides have been obtained then via a subsequent, highly diastereoselective oxidation of the prostereogenic sulfur centre.
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页码:408 / 414
页数:7
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