Citation: Hui-Jing Li, Dong-Hui Luo, Qin-Xi Wu, Chun-Yang Dai, Zhi-Lun Shen, Yan-Chao Wu. Bi(OTf)₃-catalyzed tandem reaction of naphthols with β,γ-unsaturated α-ketoesters. Effi cient synthesis of functionalized 4H-chromenes[J]. Chinese Chemical Letters, ;2014, 25(9): 1235-1239. doi: 10.1016/j.cclet.2014.05.023 shu

Bi(OTf)₃-catalyzed tandem reaction of naphthols with β,γ-unsaturated α-ketoesters. Effi cient synthesis of functionalized 4H-chromenes

1.
a School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China;
2.
b Beijing National Laboratory for Molecular Sciences (BNLMS), and Key Laboratory of Molecular Recognition and Function, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China

Corresponding author: Hui-Jing Li, Yan-Chao Wu,
Received Date: 18 February 2014
Available Online: 9 May 2014
Fund Project: the Natural Science Foundation of Shandong Province (No. ZR2012BM002) (Nos. 2011DXGJ13, 2012DXGJ02)

An efficient synthesis of functionalized 4H-chromenes by the tandem reaction of β,γ-unsaturated α-ketoesters with 2-naphthols, 1-naphthols, and 1,3-dihydroxynaphthalenes has been accomplished with high selectivity and excellent yields in the presence of a catalytic amount of bismuth triflate [Bi(OTf)₃, 5 mol%] under mild conditions. The functionalized 4H-chromene synthesis and our previous 2H-chromene hemiacetal synthesis could complement each other to enrich reaction diversity.
- Bismuth triflate,
- 4H-Chromenes,
- Tandem reaction,
- Selective synthesis
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Bi(OTf)3-catalyzed tandem reaction of naphthols with β,γ-unsaturated α-ketoesters. Effi cient synthesis of functionalized 4H-chromenes

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通讯作者: 陈斌, bchen63@163.com

Bi(OTf)₃-catalyzed tandem reaction of naphthols with β,γ-unsaturated α-ketoesters. Effi cient synthesis of functionalized 4H-chromenes