Dicyclohexylcarbodiimide → 3-pentanone O-{2-chloro-5-[3,6-dihydro-2,6-dioxo-3-methyl-4-trifluoromethyl-1(2H)-pyrimidinyl]-4-fluorobenzoyl}oxime

HRID 2248556

反応式

HRID 2248556 の反応式
[CH3:1][CH2:2][C:3](=[N:6][OH:7])[CH2:4][CH3:5].[Cl:8][C:9]1[CH:17]=[C:16]([F:18])[C:15]([N:19]2[C:24](=[O:25])[CH:23]=[C:22]([C:26]([F:29])([F:28])[F:27])[N:21]([CH3:30])[C:20]2=[O:31])=[CH:14][C:10]=1[C:11](O)=[O:12].C1(N=C=NC2CCCCC2)CCCCC1.N1(C2C=CN=CC=2)CCCC1>C(OCC)C>[Cl:8][C:9]1[CH:17]=[C:16]([F:18])[C:15]([N:19]2[C:24](=[O:25])[CH:23]=[C:22]([C:26]([F:27])([F:28])[F:29])[N:21]([CH3:30])[C:20]2=[O:31])=[CH:14][C:10]=1[C:11]([O:7][N:6]=[C:3]([CH2:4][CH3:5])[CH2:2][CH3:1])=[O:12]

参加物

6

反応物 4

HCID 10868DicyclohexylcarbodiimideHCID 755674-PyrrolidinopyridineHCID 28017453-Pentanone oximeHCID 120567892-Chloro-4-fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)pyrimidin-1-yl]benzoic acid

生成物 1

HCID 199942333-pentanone O-{2-chloro-5-[3,6-dihydro-2,6-dioxo-3-methyl-4-trifluoromethyl-1(2H)-pyrimidinyl]-4-fluorobenzoyl}oxime

試薬・触媒・溶媒 1

HCID 3283Diethyl Ether溶媒2 回

実験手順

0.9 g of 3-pentanone oxime is added at room temperature to a suspension of 3.0 g of 2-chloro-5-[3,6-dihydro-2,6-dioxo-3-methyl-4-trifluoromethyl-1(2H)-pyrimidinyl]-4-fluorobenzoic acid in 50 ml of diethyl ether. Thereafter, a solution of 1.9 g of dicyclohexylcarbodiimide and 0.1 g of 4-pyrrolidinopyridine in 15 ml of diethyl ether is added dropwise over 10 minutes. The reaction mixture is stirred at room temperature for 12 hours. Subsequently, it is filtered and evaporated to dryness under reduced pressure. The residue is purified by chromatography on silica gel with n-hexane/diethyl ether (4:1) as the eluent. In this manner there is obtained 3-pentanone O-{2-chloro-5-[3,6-dihydro-2,6-dioxo-3-methyl-4 -trifluoromethyl-1(2H)-pyrimidinyl]-4-fluorobenzoyl}oxime, m.p. 128°-130° C.

後処理

  1. filtrationSubsequently, it is filtered
  2. customevaporated to dryness under reduced pressure
  3. customThe residue is purified by chromatography on silica gel with n-hexane/diethyl ether (4:1) as the eluent

出典と根拠

ORDレコード
ord-e86122d1c61647a2b918633f26b6c004
出典データセット
uspto-grants-1991_08
特許番号
US05041156

関連ノート

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