K<sub>2</sub>CO<sub>3</sub>-Promoted oxy-Michael Addition/Cyclization of <i>α</i>,<i>β</i>-Unsaturated Carbonyl Compounds with Naphthols: Synthesis of Naphthopyrans
Shan-Shan Li,
Li-Li Zhao,
Min Pan,
Na Feng,
Jin-Bao Peng,
Ai-Jun Ma
Affiliations
Shan-Shan Li
School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
Li-Li Zhao
School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
Min Pan
School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
Na Feng
School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
Jin-Bao Peng
School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
Ai-Jun Ma
School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
A potassium carbonate promoted tandem oxy-Michael addition/cyclization of α,β-unsaturated carbonyl compounds with naphthol derivatives for the synthesis of 2-substituted naphthopyrans was developed. Using the readily available, inexpensive potassium carbonate as the promoter, a range of different substituted naphthopyrans were prepared.