Rapid synthesis of new 2-methyl-7-nitro-5-substituted-2,3-dihydroimidazo[5,1-b]oxazole as potential antibacterial drugs through one-pot cyclization and Suzuki–Miyaura coupling
摘要:
Original 2-methyl-7-nitro-5-substituted-2,3-dihydroimidazo[5,1-b]oxazoles were prepared by reacting 1-(2,5-dibromo-4-nitro-1H-imidazol-1-yl)propan-2-ol and various arylboronic acids through one-pot cyclization and Suzuki-Miyaura reactions under microwave irradiation.[GRAPHICS].
摘要 在5-硝基-2,3-二氢咪唑并[2,1- b ]恶唑系列中报道了在微波辐射下一锅顺序分子内环化和Suzuki-Miyaura或Sonogashira反应。首先进行羟乙基和2-位溴原子之间的1-(2,4-二溴-5-硝基-1 H-咪唑-1-基)丙-2-醇的分子内环化,然后进行通过Suzuki-Miyaura和Sonogashira在4位上的溴原子交叉偶联反应的优化和推广。用于进行这些钯催化的交叉偶联反应的各种硼酸和炔基衍生物可以取代5-硝基-2,3-二氢咪唑并[2,1- b ]恶唑化合物的6-位。 在5-硝基-2,3-二氢咪唑并[2,1- b ]恶唑系列中报道了在微波辐射下一锅顺序分子内环化和Suzuki-Miyaura或Sonogashira反应。首先进行羟乙基和2-位溴原子之间的1-(2,4-二溴-5-硝基-1 H-咪唑-1-基)丙-2-醇的分子内环化,然后进行通过Suzuki-Mi