A combination of green solvent and ultrasonic irradiation promotes the catalyst-free reaction of aldehydes, indoles and Meldrum’s acid
作者:Cheng-Wei Lü、Jia-Jing Wang、Yan-Hang Liu、Wen-Juan Shan、Qi Sun、Lei Shi
DOI:10.1007/s11164-016-2675-8
日期:2017.2
Meldrum’s acid and aldehydes in a mixture of solvent from glycerol and water under ultrasonic irradiation at room temperature without catalyst. A series of aromatic aldehydes representative of various electronic and steric conditions were employed to examine the scope of substrates for this protocol in moderate to good yields. No catalyst, clean reaction conditions, tolerating the substrates with diverse