2(1H)-Pyrimidinone, tetrahydro-1,3-dimethyl- → 6-[(2,4-Dichloro-5-thiazolyl)hydroxymethyl]-1,2,3,4-tetrahydro-3-methyl-1-(2-methylpropyl)-2,4-dioxo-thieno[2,3-d]pyrimidine-5-carboxylic acid, ethyl ester

HRID 131626

反応式

HRID 131626 の反応式
[CH3:1][N:2]1[C:7](=[O:8])[C:6]2[C:9]([C:12]([O:14][CH2:15][CH3:16])=[O:13])=[CH:10][S:11][C:5]=2[N:4]([CH2:17][CH:18]([CH3:20])[CH3:19])[C:3]1=[O:21].[Cl:22][C:23]1[S:24][C:25]([CH:29]=[O:30])=[C:26]([Cl:28])[N:27]=1.CN1C(=O)N(C)CCC1.[Li+].CC([N-]C(C)C)C>C1COCC1.C(O)(=O)C>[Cl:22][C:23]1[S:24][C:25]([CH:29]([OH:30])[C:10]2[S:11][C:5]3[N:4]([CH2:17][CH:18]([CH3:20])[CH3:19])[C:3](=[O:21])[N:2]([CH3:1])[C:7](=[O:8])[C:6]=3[C:9]=2[C:12]([O:14][CH2:15][CH3:16])=[O:13])=[C:26]([Cl:28])[N:27]=1

参加物

7

反応物 4

HCID 816462(1H)-Pyrimidinone, tetrahydro-1,3-dimethyl-HCID 14886722,4-Dichloro-1,3-thiazole-5-carboxaldehydeHCID 2724682Lithium diisopropylamideHCID 5282568Ethyl 3-methyl-1-(2-methylpropyl)-2,4-dioxo-1,2,3,4-tetrahydro-thieno[2,3-d]pyrimidine-5-carboxylate

生成物 1

HCID 866035756-[(2,4-Dichloro-5-thiazolyl)hydroxymethyl]-1,2,3,4-tetrahydro-3-methyl-1-(2-methylpropyl)-2,4-dioxo-thieno[2,3-d]pyrimidine-5-carboxylic acid, ethyl ester収率 18.9%

試薬・触媒・溶媒 2

HCID 176Acetic Acid溶媒HCID 8028Tetrahydrofuran溶媒

実験手順

To a solution of ethyl 3-methyl-1-(2-methylpropyl)-2,4-dioxo-1,2,3,4-tetrahydro-thieno[2,3-d]pyrimidine-5-carboxylate (1.5 g), 2,4-dichlorothiazole-5-carboxaldehyde (1.75 g) and DMPU (1.2 ml) in THF (25 ml) at −78° C., was added LDA (10 mmol). Acetic acid (3 ml) was added and the mixture allowed to warm to ambient temperature. The mixture was then partitioned between ethyl acetate and water, the organics were collected, dried over magnesium sulphate and concentrated to dryness. The residue was purified by normal phase chromatography (3:1 i-hexane:ethyl acetate) to give the sub-title compound as a yellow foam (0.45 g).

後処理

  1. customThe mixture was then partitioned between ethyl acetate and water
  2. customthe organics were collected
  3. dry with materialdried over magnesium sulphate
  4. concentrationconcentrated to dryness
  5. customThe residue was purified by normal phase chromatography (3:1 i-hexane:ethyl acetate)

出典と根拠

ORDレコード
ord-03a4f0a480934016888a6fbafb905ed1
出典データセット
uspto-grants-2008_06
特許番号
US07384951B2

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