反応式
[O:1]=[C:2]([O-:11])[C@H:3]([C@@H:5]([C@@H:7]([CH2:9][OH:10])[OH:8])[OH:6])[OH:4].[Na+]>O>[O:1]=[C:2]([OH:11])[C@H:3]([C@@H:5]([C@@H:7]([CH2:9][OH:10])[OH:8])[OH:6])[OH:4]参加物
3
試薬・触媒・溶媒 1
実験手順
One mole of sodium arabinonate (188 g) in 300 ml of water was acidified on an acid cation exchange resin, giving a solution of arabinonic acid. The arabinonic acid was transformed into the γ-lactone by concentrating in vacuum the aqueous solution to about 200 ml when 300 ml of butanol is added. After a third concentration, the solution is removed from the flask with the aid of 100 ml of butanol and seeded. Crystallization begins at once and a large crop of crystals forms. The crystalline product (115 g) is collected on a filter, washed with butanol and dried.
出典と根拠
- ORDレコード
- ord-16d94e34416b45479e241a3f72afdd3d
- 出典データセット
- uspto-grants-1996_10
- 特許番号
- US05563303
関連ノート
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