共 50 条
Highly Chemo-, Regio-, and Enantioselective Rhodium-Catalyzed Cross-Cyclotrimerization of Two Different Alkynes with Alkenes
被引:40
|作者:
Hara, Jun
[1
]
Ishida, Mana
[1
]
Kobayashi, Masayuki
[1
]
Noguchi, Keiichi
[2
]
Tanaka, Ken
[1
,3
]
机构:
[1] Tokyo Univ Agr & Technol, Dept Appl Chem, Grad Sch Engn, Koganei, Tokyo 1848588, Japan
[2] Tokyo Univ Agr & Technol, Instrumentat Anal Ctr, Koganei, Tokyo 1848588, Japan
[3] Japan Sci & Technol Agcy JST, ACT C, Kawaguchi, Saitama 3320012, Japan
基金:
日本科学技术振兴机构;
关键词:
alkenes;
alkynes;
asymmetric catalysis;
cyclotrimerization;
multicomponent reactions;
rhodium;
REGIOSELECTIVE INTERMOLECULAR CYCLOTRIMERIZATION;
3 UNSYMMETRICAL ALKYNES;
BORON TEMPORARY TETHER;
LIQUID ENOL ETHERS;
2+2+2 CYCLOADDITION;
ETHYL CYCLOPROPYLIDENEACETATE;
TERMINAL ALKYNES;
NICKEL;
COMPLEXES;
PYRIDINES;
D O I:
10.1002/anie.201310336
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
It has been established that a cationic rhodium(I)/(R)-tol-binap complex catalyzes the cross-cyclotrimerization of silylacetylenes, di-tert-butyl acetylenedicarboxylates, and acrylamides with excellent chemo-, regio-, and enantioselectivities. Unsymmetrical alkynoates can also be employed in place of di-tert-butyl acetylenedicarboxylate for this process, but with reduced chemoselectivity.
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页码:2956 / 2959
页数:4
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