Dimethylformamide → HCID 86647905, compound

Participants

Reaction Steps

N,N-dimethylformamide (1.298 mL) in dichloromethane (2.0 mL) at −10° C. was treated dropwise with POCl3 (1.426 mL). The mixture was stirred for 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% sodium acetate solution. When the ice had melted, the reaction mixture was poured into a reparatory funnel and extracted with diethyl ether (4×125 mL). The diethyl ether extracts were washed with aqueous 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.

Provenance & Evidence