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Rh(II)-Catalyzed Cyclopropanation of Furans and Its Application to the Total Synthesis of Natural Product Derivatives
被引:42
|作者:
Lehner, Verena
[1
,2
]
Davies, Huw M. L.
[2
]
Reiser, Oliver
[1
]
机构:
[1] Univ Regensburg, Inst Organ Chem, Univ Str 31, D-93053 Regensburg, Germany
[2] Emory Univ, Dept Chem, 1515 Dickey Dr, Atlanta, GA 30322 USA
基金:
美国国家科学基金会;
关键词:
ENANTIOSELECTIVE SYNTHESIS;
ASYMMETRIC-SYNTHESIS;
STABILIZED VINYLCARBENOIDS;
CATALYZED DECOMPOSITION;
RHODIUM CARBENOIDS;
TURNOVER NUMBERS;
RH(II) CATALYST;
PYRROLES;
DIRHODIUM(II);
CONVERSION;
D O I:
10.1021/acs.orglett.7b02009
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
Rh(II)-catalyzed enantioselective cyclopropanations of furans, providing access to synthetically useful building blocks, are reported. After screening of 10 Rh(II) catalysts, Rh-2(S-TCPTTL)(4) was identified as a highly efficient and selective catalyst (up to 98% ee, TON 88000, and TOF 24/s) for the cydopropanation of furans. These cyclopropanes were successfully applied to the enantioselective synthesis of novel paraconic acid derivatives.
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页码:4722 / 4725
页数:4
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