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Rhodium-Catalyzed Intramolecular [5+2] Cycloaddition of Inverted 3-Acyloxy-1,4-enyne and Alkyne: Experimental and Theoretical Studies
被引:14
|作者:
Li, Xiaoxun
[1
]
Song, Wangze
[1
]
Ke, Xiaona
[2
]
Xu, Xiufang
[2
]
Liu, Peng
[3
]
Houk, K. N.
[4
]
Zhao, Xian-liang
[1
,5
]
Tang, Weiping
[1
,6
]
机构:
[1] Univ Wisconsin, Sch Pharm, 425 N Charter St, Madison, WI 53706 USA
[2] Nankai Univ, Dept Chem, Key Lab Adv Energy Mat Chem, Minist Educ, Tianjin 300071, Peoples R China
[3] Univ Pittsburgh, Dept Chem, Pittsburgh, PA 15260 USA
[4] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA
[5] Zhejiang Univ Sci & Technol, Sch Biol & Chem Engn, Hangzhou 310023, Zhejiang, Peoples R China
[6] Univ Wisconsin, Dept Chem, 1101 Univ Ave, Madison, WI 53706 USA
基金:
美国国家科学基金会;
中国国家自然科学基金;
关键词:
catalysis;
cycloaddition;
enynes;
rhodium;
seven-membered rings;
DENSITY-FUNCTIONAL THEORY;
DIELS-ALDER REACTION;
7-MEMBERED RINGS;
NATURAL SESQUITERPENOIDS;
PROPARGYLIC ESTERS;
VINYL AZIRIDINES;
ENE REACTIONS;
VINYLCYCLOPROPANES;
MECHANISM;
SELECTIVITY;
D O I:
10.1002/chem.201601195
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
By switching the position of the alkene and alkyne, a new type of 3-acyloxy-1,4-enyne (ACE) five-carbon building block was developed for Rh-catalyzed intramolecular [5+2] cycloaddition. An electron-withdrawing acyl group on the alkyne termini of the ACE was essential for a regioselective 1,2-acyloxy migration. This new method provided bicyclic [5.3.0]decatrienes that are different from previous methods because of the positions of the alkenes and the acyloxy group. Multiple mechanistic pathways become possible for this new [5+2] cycloaddition and they are investigated by computational studies.
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页码:7079 / 7083
页数:5
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