Hydrogen Bromide → HCID 22401689, compound

Participants

Reaction Steps

In a mixture of 52 ml of an aqueous solution of hydrogen bromide and 36 ml of water was dissolved 4.00 g (17.9 mmol) of Compound 13 prepared in Example 10, and 1.24 g (17.9 mmol) of sodium nitrite was added to the solution under ice-cooling, followed by stirring for 30 minutes. Then, a solution of 3.08 g (21.5 mmol) of cuprous bromide in 36 ml of an aqueous solution of hydrogen bromide was added thereto and the temperature of the mixture was raised slowly to room temperature, followed by stirring for one hour. The precipitated crystals were collected by filtration and washed with water. The crystals were then subjected to silica gel column chromatography and eluted with chloroform to give 3.51 g (68%) of Compound 25. The compound was recrystallized from chloroform/ethanol for purification.

Provenance & Evidence