Hydrochloric Acid → 8-Bromo-4,5-dihydrobenzo[2,3]oxepino[4,5-d]thiazole-2-carboxylic acid

HRID 84591

反応式

HRID 84591 の反応式
C([O:3][C:4]([C:6]1[S:7][C:8]2[CH2:9][CH2:10][O:11][C:12]3[CH:19]=[C:18]([Br:20])[CH:17]=[CH:16][C:13]=3[C:14]=2[N:15]=1)=[O:5])C.[OH-].[Na+].CO.Cl>O1CCCC1.O>[Br:20][C:18]1[CH:17]=[CH:16][C:13]2[C:14]3[N:15]=[C:6]([C:4]([OH:5])=[O:3])[S:7][C:8]=3[CH2:9][CH2:10][O:11][C:12]=2[CH:19]=1

参加物

7

反応物 4

HCID 313Hydrochloric AcidHCID 887MethanolHCID 14798Sodium HydroxideHCID 57900431Ethyl 8-bromo-4,5-dihydrobenzo[2,3]oxepino[4,5-D]thiazole-2-carboxylate

生成物 1

HCID 579001668-Bromo-4,5-dihydrobenzo[2,3]oxepino[4,5-d]thiazole-2-carboxylic acid

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 8028Tetrahydrofuran溶媒

実験手順

To a solution of 8-bromo-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid ethyl ester from Example 21 (518 mg) in tetrahydrofuran (10 ml) was added a solution of sodium hydroxide (117 mg) in water (2 mL). Methanol (5 mL) was also added to aid dissolution. After 2 hours, the reaction mixture was acidified with HCl (2M) and the reaction mixture was then extracted with dichloromethane, dried (MgSO4) and the solvent removed in vacuo to yield 8-bromo-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid.

後処理

  1. extractionthe reaction mixture was then extracted with dichloromethane
  2. dry with materialdried (MgSO4)
  3. customthe solvent removed in vacuo

出典と根拠

ORDレコード
ord-7d86b101c94e4077ab4ac457b9fac1a7
出典データセット
uspto-grants-2014_09
特許番号
US08846762B2

関連ノート

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