Hydrochloric Acid → HCID 23446892, compound

Participants

Reaction Conditions

Reaction Steps

1.18 g (0.033 mol) of hydrogen chloride, dissolved in 35 ml of diethyl ether, were added at 22 to 30° C. with stirring to a suspension of 5 g (0.027 mol) of the compound from example 3 in 50 ml of 1,2-dichloroethane and the mixture was then concentrated in vacuo. The residue was treated with 150 ml of phosphorus oxychloride and the mixture was stirred at 120° C. for 3 h. The reaction mixture was then concentrated in vacuo, the residue was dissolved in methylene chloride, and the solution was treated with water and neutralized using 2 N sodium hydroxide solution. After the phase separation, the organic phase was again washed with water, then with saturated sodium chloride solution, and dried over magnesium sulfate. After concentration, 2.4 g (48% of theory) of the title compound were obtained as a yellowish powder of m.p. 77-80° C.

Provenance & Evidence