A facile synthesis of flavones catalysed by gallium (III) triflate

C Jin, F He, H Wu, J Chen, W Su

Index: Jin, Can; He, Fei; Wu, Huayue; Chen, Jiuxi; Su, Weike Journal of Chemical Research, 2009 , # 1 p. 27 - 29

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Citation Number: 3

Abstract

We have investigated a variety of reaction conditions with the cyclisation reaction of 1-(2-hydroxyphenyl)-3-aryl-1,3-propanedione in the present of various Lewis acids. The results are summarised in Table 1. It seems that nitromethane is a much better solvent (Table 1, entry 11, yield 97%) than the other solvents which were tested such as ethanol (Table 1, entry 13, yield 81%), acetonitrile (Table 1, entry 14, yield 88%), dichloromethane (Table 1, entry 15, ...