2-Benzoxepines have efficiently been synthesized from Morita–Baylis–Hillman adducts, alkyl 3-aryl-3-hydroxy-2-methylenepropanoates by treatment with HCHO catalyzed by silica supported perchloric acid (HClO4·SiO2) or Amberlyst-15 in CH2Cl2 under reflux for a short period of time (1.5—2.5 h). The catalyst can be recovered and recycled. The antibacterial properties of the new 2-benzoxepines were studied but no activity was found.
在短时间(1.5-2.5 小时)的回流条件下,在
二氧化硅支撑的
高氯酸(HClO4-SiO2)或 Amberlyst-15 催化下,在
CH2Cl2 中用 HCHO 处理,可以从 Morita-Baylis-Hillman 加合物、3-芳基-3-羟基-2-亚甲基
丙酸烷基酯高效合成 2-苯并氧杂
环庚烷。催化剂可以回收和循环使用。对新型 2-苯并氧杂
环庚烷的抗菌特性进行了研究,但未发现任何活性。