Ammonia → Ethyl 5-methyl-4-oxo-2-(thiophen-3-ylmethyl)-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylate

HRID 388398

反応式

HRID 388398 の反応式
[NH2:1][C:2]1[S:6][C:5]([C:7]([O:9][CH2:10][CH3:11])=[O:8])=[C:4]([CH3:12])[C:3]=1[C:13]([O:15]CC)=O.[S:18]1[CH:22]=[CH:21][C:20]([CH2:23][C:24]#[N:25])=[CH:19]1.Cl.O1CCOCC1.N>>[CH3:12][C:4]1[C:3]2[C:13](=[O:15])[NH:25][C:24]([CH2:23][C:20]3[CH:21]=[CH:22][S:18][CH:19]=3)=[N:1][C:2]=2[S:6][C:5]=1[C:7]([O:9][CH2:10][CH3:11])=[O:8]

参加物

5

反応物 4

HCID 222AmmoniaHCID 78537Diethyl 5-amino-3-methylthiophene-2,4-dicarboxylateHCID 837303-ThienylacetonitrileHCID 204431481,4-Dioxane hydrochloride

生成物 1

HCID 68664667Ethyl 5-methyl-4-oxo-2-(thiophen-3-ylmethyl)-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylate

実験手順

515 Milligrams of diethyl 5-amino-3-methylthiophene-2,4-dicarboxylate and 296 mg of 3-thiopheneacetonitrile were added to 8 mL of 4N hydrogen chloride-dioxane solution and stirred for 10 hours. Thereafter the liquid reaction mixture was poured on ice, and its pH was adjusted to 8-9 with 25% aqueous ammonia. Whereupon precipitated crystals were recovered by filtration and washed first with water, and then with hexane. The crude crystals were recrystallized from a liquid mixture of N,N-dimethylformamide and cyclohexane, to provide 397 mg of the title compound.

後処理

  1. customThereafter the liquid reaction mixture
  2. additionwas poured on ice, and its pH
  3. customWhereupon precipitated crystals
  4. filtrationwere recovered by filtration
  5. washwashed first with water
  6. customThe crude crystals were recrystallized from a liquid mixture of N,N-dimethylformamide and cyclohexane

出典と根拠

ORDレコード
ord-c9af8f1317034c27b6e3a3a0c5a95503
出典データセット
uspto-grants-2013_02
特許番号
US08377944B2

関連ノート

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