<P> Scandium(III) triflate is an excellent catalyst in the von Pechmann condensation. The solvent-free catalytic reactions proceed smoothly with a range of phenols and &bgr;-ketoesters in the presence of 10 mol% scandium(III) triflate at 80 °...
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https://www.riss.kr/link?id=A107640002
2008
-
SCI,SCIE,SCOPUS
학술저널
4395-4406(12쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
<P> Scandium(III) triflate is an excellent catalyst in the von Pechmann condensation. The solvent-free catalytic reactions proceed smoothly with a range of phenols and &bgr;-ketoesters in the presence of 10 mol% scandium(III) triflate at 80 °...
<P> Scandium(III) triflate is an excellent catalyst in the von Pechmann condensation. The solvent-free catalytic reactions proceed smoothly with a range of phenols and &bgr;-ketoesters in the presence of 10 mol% scandium(III) triflate at 80 °C. This simple method affords various 4-substituted coumarins in good to excellent yield and is superior to the classical method in several aspects: solvent-free conditions, short reaction times, a decreased catalyst loading, a mild reaction temperature, and an easy workup.</P>