HCID 73099570, compound → D-Arabinose

Participants

Reaction Steps

Sodium glucoheptonate dihydrate (71.3 g/0.25 mole), cobalt chloride hexahydrate (0.12 g/0.50 mmole) and water (500 ml) are introduced into a double envelope reactor. The mixture is brought to a temperature of 30° C. and to a pH of 6.5 by the addition of soda 2N. The water, oxygenated to 30% (77 ml/0.75 mole), is introduced over 75 minutes, maintaining the temperature between 30 and 35° C. and the pH at 6.5 with the aid of soda 2N. When the addition is finished, the solution is agitated for a further hour. The pH is brought to 2.5 by the addition of concentrated sulphuric acid (8 ml). The pink solution has the following composition:

Provenance & Evidence