Azoles. Part 10. Thiazolo[4′,5′,4,5]thieno[3,2-d]pyrimidine, a New Heterocyclic Ring System
作者:Salah Athmani、Brian Iddon
DOI:10.1016/s0040-4020(01)90380-1
日期:1992.9
obtained were converted into the corresponding thiazolo[4′,5′;4,5]thieno[3,2-d]pyrimidin-5(6H)-one by treatment with triethyl orthoformate in acetic anhydride. With phosphoryl chloride these gave the 5-chloro-derivative, which underwent displacement of the chlorine-atom when allowed to react with various amines. Reductive dechlorination of 5-chlorothiazolo[4′,5′;4,5]thieno[3,2-d]-pyrimidine gave the parent
通过使4-氯噻唑-5-甲醛或4-氯噻唑-5-腈与2-巯基乙酸乙酯或2-巯基乙酰胺反应来制备噻吩并[2,3- d ]噻唑。将获得的6-氨基噻吩并[2,3- d ]噻唑-5-羧酰胺转化为相应的噻唑并[4',5'; 4,5]噻吩并[3,2 - d ]嘧啶-5(6 H)-一种通过在乙酸酐中用原甲酸三乙酯处理。用磷酰氯得到5-氯衍生物,当其与各种胺反应时,该氯原子被氯原子取代。5-氯噻唑并[4',5'; 4,5]噻吩并[3,2- d ]-嘧啶的还原脱氯反应得到母体杂环。