New method for the synthesis of thieno[2,3-d]pyrimidines

被引:0
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作者
O. B. Ryabova
M. I. Evstratova
V. A. Makarov
V. A. Tafeenko
V. G. Granik
机构
[1] State Antibiotics Research Center,
[2] M. V. Lomonosov Moscow State University,undefined
关键词
isothiazolo[5,4-; ]pyrimidine; nitromethane; thieno[2,3-; ]pyrimidine; 5-formylpyrimidine;
D O I
10.1007/s10593-005-0082-y
中图分类号
学科分类号
摘要
The reaction of 5-formyl-4-thiocyanatopyrimidines with nitromethane was studied under various conditions. The reaction was found unexpectedly to proceed with closure of a thiophene ring to give thieno[2,3-d]pyrimidines. The use of ammonium acetate as the catalyst leads to a side reaction involving closure of an isothiazole ring to give isothiazolo[5,4-d]pyrimidines. X-ray diffraction crystallographic analysis was used to confirm the structure of thieno[2,3-d]pyrimidine.
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页码:1352 / 1358
页数:6
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