Synthesis of a novel heterocyclic ring system: 2-thia-3,5,6,7,9-pentaazabenz[cd]azulenes
作者:Sigitas Tumkevicius、Luigi A Agrofoglio、Andrius Kaminskas、Gintaras Urbelis、Thomas A Zevaco、Olaf Walter
DOI:10.1016/s0040-4039(01)02222-5
日期:2002.1
Derivatives of 6,9-dihydro- and 6,7,8,9-tetrahydro-2-thia-3,5,6,7,9-pentaazabenz[cd]azulenes representing a new heterocyclic system have been prepared by the cyclocondensation reaction of ethyl 5-amino-4-(1-methylhydrazino)-2-methylthiothieno[2,3-d]-pyrimidine-6-carboxylate with ethyl orthoformate and various aldehydes.
通过环缩合反应制备了代表新杂环系统的6,9-二氢-和6,7,8,9-四氢-2-硫代-3,5,6,7,9-戊杂苯并[ cd ] azulenes的衍生物5-氨基-4-(1-甲基肼基)-2-甲基硫代噻吩并[2,3 - d ]-嘧啶-6-羧酸乙酯与原甲酸乙酯和各种醛的混合物。