Reaction of 2-alkylthio-6-amino-pyrimidin-4(3H)-ones with ethyl bromopyruvate. Synthesis of furo-[2,3-d]-pyrimidine and furo[3,2-e]imidazo-[1,2-c]pyrimidine carboxylates
作者:V. Masevicius、G. Petraityte、S. Tumkevicius
DOI:10.1007/s10593-009-0264-0
日期:2009.3
Reaction of 2-alkylthio-6-aminopyrimidin-4(3H)-ones with ethyl bromopyruvate to give ethyl 2-alkyl-thio-4-aminofuro[2,3-d]pyrimidine-5-carboxylates has been shown to proceed under neutral or acidic conditions. The obtained furo[2,3-d]pyrimidines underwent further cyclocondensation reaction with ethyl bromopyruvate to afford diethyl 5-alkylthiofuro[3,2-e]imidazo[1,2-c]pyrimidine-2,9-dicarboxy-lates
已显示2-烷硫基6-氨基嘧啶-4(3H)-与溴丙酮酸乙酯的反应产生2-烷基硫基-4-氨基呋喃[2,3 - d ]嘧啶-5-羧酸乙酯在中性条件下进行或酸性条件。将获得的呋喃并[2,3- d ]嘧啶与溴丙酮酸乙酯进行进一步的环缩合反应,得到5-乙基硫代呋喃二[3,2- e ]咪唑并[1,2 - c ]嘧啶-2,9-二羧酸二乙酯。