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Nickel-catalyzed reductive cyclization of unactivated 1,6-enynes in the presence of organozinc reagents
被引:47
|作者:
Chen, Mao
[1
]
Weng, Yue
[1
]
Guo, Mian
[1
]
Zhang, Hua
[1
]
Lei, Aiwen
[1
]
机构:
[1] Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China
关键词:
cyclization;
enynes;
nickel;
organozinc reagents;
synthetic methods;
D O I:
10.1002/anie.200704452
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
(Chemical Equation Presented) Pyrrolidine and tetrahydrofuran derivatives were synthesized in a highly stereoselective manner through the Ni-catalyzed reduction of the title compounds under mild conditions (see scheme). The product of cyclization is initially associated with both a Ni and a Zn species, the removal of which by elimination and hydrolysis corresponds to the formal incorporation of dihydrogen. acac=acetylacetonate; R=alkyl, aryl; X=N, O. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.
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页码:2279 / 2282
页数:4
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