Cis-2,4-diphenyl-1,2,3,4-tetrahydroquinolines were diastereoselectively synthesized by FeCl3-promoted solvent-free Diels–Alder reaction of in situ generated imine with styrene under ball milling.
通过FeCl3促进的无溶剂Diels–Alder反应,在球磨条件下,利用现场生成的亚胺与苯乙烯,对Cis-2,4-二苯基-1,2,3,4-四氢喹啉进行了对映选择性合成。