Chemoselective tandem SN2′/SN2′′/inter- or intramolecular Diels-Alder reaction of γ-vinyl MBH carbonates with phenols and o-hydroxychalcones

被引:5
|
作者
Liu, Wei [1 ]
Zhang, Le [1 ]
Liu, Ye [1 ]
Fan, Shi-Lu [1 ]
Dai, Jian-Jun [1 ]
Tao, Wei [1 ]
Zhu, Hui-Xia [1 ]
Xiao, Hua [1 ,2 ]
机构
[1] Hefei Univ Technol, Sch Food & Biol Engn, 485 Danxia Rd, Hefei 230601, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Organ Chem, Key Lab Synthet Chem Nat Subst, 345 Lingling Lu, Shanghai 200032, Peoples R China
关键词
ALLYLIC ALKYLATION; HILLMAN; DIMERIZATION; DERIVATIVES; ANNULATION; ACETATES;
D O I
10.1039/d2cc03771h
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
An unprecedented consecutive S(N)2 '/S(N)2 '' addition of phenol to gamma-vinyl MBH carbonate forms a reactive diene intermediate, followed by a dimerization/elimination process to give functionalized exocyclohexenes with excellent chemoselectivity. When using o-hydroxychalcones as pronucleophiles, an S(N)2 '/S(N)2 ''/intramolecular Diels-Alder reaction sequence occurs, selectively producing a series of pharmaceutically intriguing tricyclic chromane derivatives with good diastereoselectivity. The good nucleophilicity and fair nucleofugicity exhibited by phenoxy anion play a pivotal role in the S(N)2 '' addition step.
引用
收藏
页码:9794 / 9797
页数:4
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