反应 #3425180
相关文献 (1)
openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US08546399B2
反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.
实验步骤: Dimethylformamide (1.298 mL) in dichloromethane (2.0 mL) at −10° C. was treated dropwise with POCl3 (1.426 mL) to give a colorless solution. The mixture was stirred 5 minutes and then warmed to room temperature and stirred 30 minutes. The solution was cooled to −10° C., treated dropwise with a solution of 4-methoxy-4-methylcyclohexanone (1.74 g) in dichloromethane (2.5 mL), and stirred for 4 hours at ambient temperature. The reaction mixture was poured over a mixture of ice and 25% aqueous sodium acetate solution. After the ice melted, the reaction mixture was poured into a separatory funnel and extracted with diethyl ether (4×125 mL). The diethyl ether extracts were washed with NaHCO3 solution and brine, dried (MgSO4), filtered and concentrated. The concentrate was chromatographed on silica gel with 0 to 5% ethyl acetate in hexanes as the eluent. to give a colorless solution stirred 30 minutes The solution was cooled to −10° C. stirred for 4 hours at ambient temperature the reaction mixture was poured into a separatory funnel extracted with diethyl ether (4×125 mL) The diethyl ether extracts were washed with NaHCO3 solution and brine dried (MgSO4) filtered concentrated The concentrate was chromatographed on silica gel with 0 to 5% ethyl acetate in hexanes as the eluent
来源 ID: ord-8c8fa8869d334d68b18615ab1268c654