2,3-Dihydroxybenzoic Acid → 2-(2,3-dihydroxybenzoyl)oxymethyl-5-hydroxy-4H-pyran-4-one

HRID 259845

反応式

HRID 259845 の反応式
[OH:1][C:2]1[C:10]([OH:11])=[CH:9][CH:8]=[CH:7][C:3]=1[C:4]([OH:6])=[O:5].[OH-].[Na+].[CH:14]1[C:19](=[O:20])[C:18]([OH:21])=[CH:17][O:16][C:15]=1[CH2:22]Cl>>[OH:1][C:2]1[C:10]([OH:11])=[CH:9][CH:8]=[CH:7][C:3]=1[C:4]([O:6][CH2:22][C:15]1[O:16][CH:17]=[C:18]([OH:21])[C:19](=[O:20])[CH:14]=1)=[O:5]

参加物

4

反応物 3

HCID 192,3-Dihydroxybenzoic AcidHCID 14798Sodium HydroxideHCID 82051Chlorokojic acid

生成物 1

HCID 224040092-(2,3-dihydroxybenzoyl)oxymethyl-5-hydroxy-4H-pyran-4-one収率 50.2%

実験手順

By following the procedure of Example 1 by employing 1.0 g(6.5 mmole) of 2,3-dihydroxybenzoic acid, 0.26 g (8.5 mmole) of sodium hydroxide and 0.92 g(7.6 mmole) of chlorokojic acid, there was obtained 0.8 g(50.2%) of 2-(2,3-dihydroxybenzoyl)oxymethyl-5-hydroxy-4H-pyran-4-one as a solid.

出典と根拠

ORDレコード
ord-bb4cce7a132f41968238228fa8764417
出典データセット
uspto-grants-1996_06
特許番号
US05523421

関連ノート

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