Efficient Syntheses of Ethyl 2-Methylthio- and Ethyl 2-Benzylthio-6-methyl(aryl)pyrimidine-4-carboxylates and Their Carboxylic Acid Derivatives
作者:Nilo Zanatta、Andressa Fortes、Carlos Bencke、Mário Marangoni、Adriano Camargo、Cassio Fantinel、Helio Bonacorso、Marcos Martins
DOI:10.1055/s-0034-1379696
日期:——
A simple and efficient procedure for the synthesis of ethyl 2-methylthio- and ethyl 2-benzylthio-6-methyl(aryl)-pyrimidine-4-carboxylates and their corresponding acid derivatives is reported. The products are obtained in good yields via the cyclocondensation reaction of ethyl 4-alkoxy-2-oxo-4-methyl(aryl)-but-3-enoates with 2-methylisothiourea sulfate or 2-benzylisothiourea hydrochloride, under mild
报道了一种简单而有效的合成 2-甲硫基-和 2-苄基硫基-6-甲基(芳基)-嘧啶-4-羧酸乙酯及其相应酸衍生物的方法。4-烷氧基-2-氧代-4-甲基(芳基)-丁-3-烯酸乙酯与2-甲基异硫脲硫酸盐或2-苄基异硫脲盐酸盐在温和、碱性、水溶液条件下以良好的收率得到产物。条件。