作者:Refaah A. Alshahrani、Adil A. Gobouri、Naif A. Alshanbari、Saleh A. Ahmed、Shams H. Abdel-Hafez
DOI:10.1080/10426507.2018.1424165
日期:2018.6.3
GRAPHICAL ABSTRACT ABSTRACT The targeted synthesis of 2-(methylsulfanyl)-6-(furan-2-yl)-4(3H)-selenoxo -pyrimidine-5-carbonitrile failed due to the formation 1-methyl-2-methylsulfanyl-6-oxo -4-(furan-2-yl)-1,6-dihydropyrimidine-5-carbonitrile. A new series of 5,6,7,8-tetrahydro-1-benzo thieno[2,3-d]pyrimidine-4-yl substituted selanyl derivatives were prepared by the reaction of sodium diselenide with
图形摘要摘要 2-(methylsulfanyl)-6-(furan-2-yl)-4(3H)-selenoxo-pyrimidine-5-carbonitrile 的靶向合成由于形成 1-methyl-2-methylsulfanyl-6- 而失败oxo -4-(furan-2-yl)-1,6-dihydropyrimidine-5-carbonitrile。通过二硒化钠与4-氯-5,6反应制备了一系列新的5,6,7,8-四氢-1-苯并噻吩并[2,3-d]嘧啶-4-基取代的硒基衍生物, 7,8-四氢-1-苯并噻吩并[2,3-d]嘧啶,然后与氯乙酸衍生物如氯乙酸乙酯、氯乙酰胺或氯乙腈反应。(5,6,7,8-四氢-1-苯并噻吩并[2,3-d]嘧啶-4-基硒基)乙酸乙酯与水合肼的肼解得到相应的肼衍生物。后者与乙酰乙酸乙酯、乙酰丙酮、丙二酸二乙酯、乙氧基亚甲基丙二腈或 2-氰基-3-乙氧基乙酸乙酯得到