作者:Xavier Companyo、Albert Moyano、Ramon Rios
DOI:10.2174/157017809788489855
日期:2009.6.1
A facile and mild synthesis of 4-tosyl-4,5-dihydrooxazoles is described. The reaction between tosyl methyl isocyanide (TosMIC) and cinnamic or aromatic aldehydes is catalyzed by triethylamine, affording trans-5-styryl- or 5-aryl-4- tosyl-4,5-dihydrooxazoles in quantitative yields without further purification. The mild reaction conditions allowed for the first time the use of cinnamaldehyde derivatives with excellent results.
报道了一种简便温和的4-甲苯磺酰基-4,5-二氢恶唑合成方法。在三乙胺催化下,甲苯磺酰甲基异氰(TosMIC)与肉桂醛或芳香醛反应,无需进一步纯化即能以定量收率得到反式5-苯乙烯基-或5-芳基-4-甲苯磺酰基-4,5-二氢恶唑。温和的反应条件首次使得肉桂醛衍生物的应用得以实现,并且效果极佳。