Synthesis and structure of functionalized podands containing 4,7-dihydrotetrazolo[1,5-а]pyrimidine ring. Differently substituted dihydropyrimidine podands
作者:Elena S. Filatova、Olga V. Fedorova、Pavel A. Slepukhin、Gennady L. Rusinov、Valery N. Charushin
DOI:10.1007/s10593-018-2373-0
日期:2018.10
5-а]dihydropyrimidine groups. Byproducts were isolated and identified as podands containing different substituents – one 4,7-dihydrotetrazolo[1,5-а]pyrimidine ring system and a free hydroxy group at the other terminus of the polyether chain. Analogous differently substituted podands, including one 3,4-dihydropyrimidine-2(1H)-thione moiety, were isolated from the reactions of 3-oxobutanoate-containing polyethers with
在多磷酸存在下,含3-氧代丁酸酯的聚醚与苯甲醛和5-氨基四唑的反应被用于合成含有两个末端四唑并[1,5- α ]二氢嘧啶基团的豆荚。分离出副产物并将其鉴定为含有不同取代基的豆荚-一个4,7-二氢四唑并[1,5- α ]嘧啶环系统和在聚醚链另一端的自由羟基。从含3-氧代丁酸酯的聚醚与苯甲醛和硫脲的反应中分离出类似的不同取代的豆荚,包括一个3,4-二氢嘧啶-2(1 H)-硫酮部分。