Comparison of conventional and microwave-assisted synthesis of some new sulfenamides under free catalyst and ligand
作者:Hasan Yakan、Halil Kütük
DOI:10.1007/s00706-018-2261-4
日期:2018.11
AbstractSulfenamide and its derivatives (S–N bond) have been synthesized with classical method in the literature. However, microwave-assisted synthesis of a series of N-(substituted phenylthio), N-(benzylthio), N-(cyclothio), and N-(2-mercaptobenzimidazolyl)amines has been not in the literature yet. They have been obtained from treating some amines (4 mmol) with thiophthalimides (PhthSR, 1 mmol) using
摘要文献中已用经典方法合成了次磺酰胺及其衍生物(SN键)。然而,文献中还没有微波辅助合成一系列N-(取代的苯硫基),N-(苄硫基),N-(环硫基)和N-(2-巯基苯并咪唑基)胺。它们是通过在2-乙氧基乙醇(β)存在下使用硫转移试剂用硫代邻苯二甲酰亚胺(PhthSR,1 mmol)处理某些胺(4 mmol)而获得的。-ee,纯净)在50°C的微波辐射下。在游离的催化剂和配体下,亚磺酰胺的有效合成以70-98%的良好至极好的收率表明了该反应的范围。合成的亚磺酰胺衍生物中有九种是新颖的。所有的硫醇都与吗啉反应,以78-98%的优异收率得到相应的亚磺酰胺。硫酚,4-甲基硫酚,4-氯硫酚和4-氟硫酚与环己胺反应生成相应的亚磺酰胺,收率高达81-92%。硫酚,4-甲基硫酚,4-氯硫酚与吡咯烷反应生成相应的亚磺酰胺,收率为70-76%。我们观察到叔丁胺与N的反应在(DPPH)作为自由基清除剂的微波辐射下