Silica-ZnCl 2 : An Efficient Catalyst for the Synthesis of 4-Methylcoumarins.
Silica-ZnCl2 has been found to be an efficient and eco-friendly catalyst for the synthesis of substituted 4-methylcoumarins from ethyl acetoacetate and substituted phenols under "neat" conditions in an oil bath at 80°C. The experimental procedure is simple, includes shorter reaction times (15-65 min), compatible with sensitive functional groups, and results in excellent yield of the products.
Department of Studies in Chemistry, Central College Campus, Bangalore University, Bengaluru 560001, India.
Bandita
B
Datta
Department of Studies in Chemistry, Central College Campus, Bangalore University, Bengaluru 560001, India.
Mohamed Afzal
MA
Pasha