Dimethyl Sulfoxide → HCID 86744770, compound

Participants

Reaction Conditions

Reaction Steps

1,6 cm3 of dimethyl sulfoxyde are added dropwise to a mixture, cooled to -50°/-60° C., of 1.09 cm3 of oxalyl chloride and 30 cm3 of methylene chloride, after agitating for 15 minutes, 1,6 g of 4-hydroxy methylquinuclidine (Helv. Chim. Acta 57 (8) 2332 (1974)) in 50 cm3 of methylene chloride are added and the medium is agitated for 2 hours at -50°/-60° C. Then, 7.89 cm3 of triethylamine are added dropwise. The mixture is allowed to warm at room temperature, a solution of 0.95 g of O-methyl hydroxylamine hydrochloride in 30 cm3 of methanol is added and the reaction medium is maintained for 16 hours to room temperature. The solvents are evaporated to dryness, the residue is taken up with dichloromethane, alkalized with 2N sodium hydroxyde, after decantation the aqueous phase is then extracted with dichloromethane. The organic extracts are evaporated to dryness. The residue is dissolved in ethyl ether and the hydrochloride is obtained using gaseous hydrochloric acid. The solid is filtered off and crystallized in a mixture of ethanol-ethyl ether. 0.91 g of expected product is obtained. M.P.=271°-271,5° C. (with decomposition).

Provenance & Evidence