Water → 3-(Benzyloxy)-10,10-dimethyl-4-oxo-6,7,9,10-tetrahydro-4H-pyrimido[1,2-d][1,4]oxazepine-2-carboxylic acid

HRID 1365743ノート

反応式

HRID 1365743 の反応式
[CH2:1]([O:8][C:9]1[C:21](=[O:22])[N:13]2[CH2:14][CH2:15][O:16][CH2:17][C:18]([CH3:20])([CH3:19])[C:12]2=[N:11][C:10]=1[C:23]([O:25]CC)=[O:24])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[Li+].[OH-].O>C1COCC1>[CH2:1]([O:8][C:9]1[C:21](=[O:22])[N:13]2[CH2:14][CH2:15][O:16][CH2:17][C:18]([CH3:20])([CH3:19])[C:12]2=[N:11][C:10]=1[C:23]([OH:25])=[O:24])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

参加物

5

反応物 3

HCID 962WaterHCID 3939Lithium HydroxideHCID 58877852Ethyl 3-(benzyloxy)-10,10-dimethyl-4-oxo-6,7,9,10-tetrahydro-4H-pyrimido[1,2-d][1,4]oxazepine-2-carboxylate

生成物 1

HCID 588778933-(Benzyloxy)-10,10-dimethyl-4-oxo-6,7,9,10-tetrahydro-4H-pyrimido[1,2-d][1,4]oxazepine-2-carboxylic acid収率 91.8%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

実験手順

Ethyl 3-(benzyloxy)-10,10-dimethyl-4-oxo-6,7,9,10-tetrahydro-4H-pyrimido[1,2-d][1,4]oxazepine-2-carboxylate (920 mg, 2.5 mmol) was dissolved in 5 mL of THF and to it was added with stirring LiOH (120 mg, 5 mmol) and 5 mL water. After 30 min, the THF was evaporated and the aqueous layer was acidified with dil HCl. This was extracted with CH2Cl2, dried (MgSO4), filtered and concentrated. Trituration from Et2O gave the title compound (790 mg, 91%) as a solid: 1H NMR (300 MHz, CDCl3) δ: 1.40 (s, 6H), 3.60 (s, 2H), 3.65-3.95 (m, 2H), 4.10-4.90 (m, 2H), 5.41 (s, 2H), 7.25-7.42 (m, 3H), 7.45-7.58 (m, 2H). LC/MS (M+H): 345.

後処理

  1. customthe THF was evaporated
  2. extractionThis was extracted with CH2Cl2
  3. dry with materialdried (MgSO4)
  4. filtrationfiltered
  5. concentrationconcentrated

出典と根拠

ORDレコード
ord-23ac3ebecc414ddf801866527fd2dd2b
出典データセット
uspto-grants-2011_02
特許番号
US07893055B2

反応ノート

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