New access to thioglycolurils by condensation of 4,5-dihydroxyimidazolidin-2-ones(thiones) with HSCN
摘要:
A general and highly effective protocol for the direct synthesis of mono- and dithioglycolurils containing various substituents at the 1,3-nitrogen atoms has been developed based on the condensation of easily accessible dihydroxyimidazolidin-2-ones with HSCN under mild reactions conditions. (C) 2015 Elsevier Ltd. All rights reserved.
New access to thioglycolurils by condensation of 4,5-dihydroxyimidazolidin-2-ones(thiones) with HSCN
摘要:
A general and highly effective protocol for the direct synthesis of mono- and dithioglycolurils containing various substituents at the 1,3-nitrogen atoms has been developed based on the condensation of easily accessible dihydroxyimidazolidin-2-ones with HSCN under mild reactions conditions. (C) 2015 Elsevier Ltd. All rights reserved.
Regioselective synthesis of 1-alkyl-4-methylsemithioglycolurils
作者:Anton A. Galochkin、Alisa E. Pavlovskaya、Vladimir V. Baranov、Yurii A. Strelenko、Angelina N. Kravchenko
DOI:10.1007/s10593-022-03134-2
日期:2022.11
The regioselective reaction of 4,5-dihydroxy-1-methylimidazolidine-2-thione with 1-alkylureas was explored for the first time, predominantly providing the previously inaccessible 1-alkyl-4-methylsemithioglycolurils as the major products. We demonstrated that the interaction of the reactants was accompanied by the formation of isomeric 1-alkyl-6-methylsemithioglycolurils and several known compounds:
首次探索了 4,5-二羟基-1-甲基咪唑啉-2-硫酮与 1-烷基脲的区域选择性反应,主要提供以前无法获得的 1-烷基-4-甲基半硫甘脲作为主要产物。我们证明了反应物的相互作用伴随着异构 1-alkyl-6-methylsemithioglycolurils 和几种已知化合物的形成:1-methyl- 和 3-methylthiohydantoin,1-methyl-1 H -imidazole-2(3 H ) -硫酮和 1,4-二取代甘脲作为副产品。4,5-dihydroxy-1-methylimidazolidine-2-thione 与 1-isopropylurea 的反应也产生了 1,1'-(1-methyl-2-thioxoimidazolidine-4,5-diyl)bis(3-isopropylurea) 的混合物) 非对映异构体。
New access to thioglycolurils by condensation of 4,5-dihydroxyimidazolidin-2-ones(thiones) with HSCN
作者:Vladimir V. Baranov、Yulia V. Nelyubina、Angelina N. Kravchenko、Natalya G. Kolotyrkina、Ksenia A. Biriukova
DOI:10.1016/j.tetlet.2015.09.071
日期:2015.10
A general and highly effective protocol for the direct synthesis of mono- and dithioglycolurils containing various substituents at the 1,3-nitrogen atoms has been developed based on the condensation of easily accessible dihydroxyimidazolidin-2-ones with HSCN under mild reactions conditions. (C) 2015 Elsevier Ltd. All rights reserved.