HETEROAROMATIZATION WITH KETENE DITHIOACETALS: PART II. SYNTHESIS OF SOME NOVEL 5-AMINOPYRAZOLE-3-CARBONITRILE, 3-CARBOXAMIDE AND PYRAZOLO[3,4-d]PYRIMIDIN-4-ONE DERIVATIVES AS ANTIMICROBIAL AGENTS
作者:Saber M. Hassan、Hussein A. Emam、Mahmoud M. Abdelall
DOI:10.1080/10426500108040260
日期:2001.8
Abstract Ketene dithioacetals la-d are utilized for synthesis of pyrazoledithiocarboxylates 2a-d and arylaminopyrazoles 4a,b with two different substituents (o-ethoxy and p-diethylminosulfonyl) in aryl residue. Some transformation of the dithioesters 2 ate described. After that arylaminopyraroles 4a,b are converted to pyrazolopyrimidine derivatives 8–11.
摘要 乙烯酮二硫代缩醛 1a-d 用于合成吡唑二硫代羧酸酯 2a-d 和芳基氨基吡唑 4a、b,在芳基残基中具有两个不同的取代基(邻乙氧基和对二乙基氨基磺酰基)。描述了二硫酯 2 ate 的一些转化。之后,芳基氨基吡咯4a,b 被转化为吡唑并嘧啶衍生物8-11。