Citation: Zhi Wei Chen, Yan Li Wang, Ren Er Chen, Wei Ke Su. Ytterbium triflate hydrate catalyzed Michael addition and cyclocondensation of α,β-unsaturated ketones with active methylene compounds[J]. Chinese Chemical Letters, ;2008, 19(9): 1024-1026. doi: 10.1016/j.cclet.2008.06.032 shu

Ytterbium triflate hydrate catalyzed Michael addition and cyclocondensation of α,β-unsaturated ketones with active methylene compounds

Zhi Wei Chen ^a,b, ,
Yan Li Wang ^a,b ,
Ren Er Chen ^a,b ,
Wei Ke Su ^a,b

a Key Laboratory of Pharmaceutical Engineering of Ministry of Education, Zhejiang University of Technology, PR China;
b College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, PR China

Received Date: 26 February 2008

Fund Project: We are grateful to the National Natural Science Foundation of China (No. 20676123) for financial support.

Catalyzed by ytterbium (Ⅲ) triflate hydrate[Yb(OTf)₃·xH₂O], the Michael addition and cycloeondensation of α,β-unsaturated ketones with active methylene compounds to afford the 1,4-adducts and benzo[b]pyran derivatives, respectively were studied.
- Ytterbium(Ⅲ) triflate hydrate,
- α,β-Unsaturated ketones,
- Active methylene compounds,
- Benzo[b]pyran derivatives
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