Acid-Catalyzed Condensation of o-Phenylenediammines and o-Aminophenols with α-Oxodithioesters: A Divergent and Regioselective Synthesis of 2-Methylthio-3-aryl/Heteroarylquinoxalines and 2-Acylbenzoxazoles
作者:Kuppalli R Kiran、Toreshettahally R Swaroop、Kodipura P Sukrutha、Jeegundipattana B Shruthi、Seegehally M Anil、Kanchugarakoppal S Rangappa、Maralinganadoddi P Sadashiva
DOI:10.1055/s-0039-1690616
日期:2019.11
Abstract o-Phenylenediammines and o-aminophenols were reacted with α-oxodithioesters in a highly regioselective fashion to give 2-methylthio-3-aryl/heteroarylquinoxalines and 2-acylbenzoxazoles in 55–94% and 45–86%, respectively, in the presence of p-toluene sulfonic acid catalyst. Control experiments involving reaction of aniline with a α-oxodithioester indicated that the thiocarbonyl group is more
抽象的 邻苯二胺和邻氨基苯酚以高度区域选择性的方式与α-氧二硫代酯反应,分别在55-94%和45-86%的存在下,分别生成2-甲硫基-3-芳基/杂芳基喹喔啉和2-酰基苯并恶唑类化合物。p-甲苯磺酸催化剂。涉及苯胺与α-氧代二硫酯反应的对照实验表明,硫代羰基比羰基更具反应性。基于此,给出了可能形成喹喔啉和苯并恶唑的机理。通过生物信息学确定了喹喔啉和苯并恶唑的生物靶标。发现喹喔啉与人双特异性酪氨酸磷酸化调节的激酶1A和具有人羧酸酯酶的苯并恶唑具有良好的结合亲和力。 邻苯二胺和邻氨基苯酚以高度区域选择性的方式与α-氧二硫代酯反应,分别在55-94%和45-86%的存在下,分别生成2-甲硫基-3-芳基/杂芳基喹喔啉和2-酰基苯并恶唑类化合物。p-甲苯磺酸催化剂。涉及苯胺与α-氧代二硫酯反应的对照实验表明,硫代羰基比羰基更具反应性。基于此,给出了可能形成喹喔啉和苯并恶唑的机理。通过生物信息学确定了喹