Facile stereoslective synthesis of spiro[indole-oxiranes] by combination of phase transfer catalyst and ultrasound irradiation and their bioassay.

摘要: Abstract An alternative and environmentally benign pathway for diastereoslective synthesis of fluorinated spiro[indole-3,2′-oxirane]-3′-benzoyl-2(1H)-ones (2a–g) is reported. The spiro[indole-3,2′-oxiranes] derivatives were obtained in 90–97% yield exclusively via the epoxidation 3-aroylmethylene indole-2-ones with 30% aqueous hydrogen peroxide using cetyltrimethyl ammonium bromide as a phase transfer catalyst under ultrasound irradiation. lead compounds have been tested their antimicrobial activity antioxidant properties.