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4-Chlorobenzaldehyde → 4-acetyl-5-(4-chlorophenyl)-1-(3,8-dimethyl-[1,2,4]triazolo[4,3-a]pyridin-6-yl)-3-hydroxy-1H-pyrrol-2(5H)-one

HRID 873952
ノート
印刷プレビュー

反応式

HRID 873952 の反応式
[CH3:1][C:2]1[N:6]2[CH:7]=[C:8]([NH2:12])[CH:9]=[C:10]([CH3:11])[C:5]2=[N:4][N:3]=1.[Cl:13][C:14]1[CH:21]=[CH:20][C:17]([CH:18]=O)=[CH:16][CH:15]=1.[O:22]=[C:23]([CH2:29][C:30](=[O:32])[CH3:31])[C:24](OCC)=[O:25]>C(O)(=O)C>[C:30]([C:29]1[CH:18]([C:17]2[CH:20]=[CH:21][C:14]([Cl:13])=[CH:15][CH:16]=2)[N:12]([C:8]2[CH:9]=[C:10]([CH3:11])[C:5]3[N:6]([C:2]([CH3:1])=[N:3][N:4]=3)[CH:7]=2)[C:24](=[O:25])[C:23]=1[OH:22])(=[O:32])[CH3:31]
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

5

反応物 3

HCID 77264-ChlorobenzaldehydeHCID 69208Ethyl 2,4-dioxovalerateHCID 753574493,8-Dimethyl-[1,2,4]triazolo[4,3-a]pyridin-6-amine

生成物 1

HCID 1177026714-acetyl-5-(4-chlorophenyl)-1-(3,8-dimethyl-[1,2,4]triazolo[4,3-a]pyridin-6-yl)-3-hydroxy-1H-pyrrol-2(5H)-one収率 79%

試薬・触媒・溶媒 1

HCID 176Acetic Acid溶媒

反応条件

温度
100 °C

実験手順

A mixture of 3,8-dimethyl-[1,2,4]triazolo[4,3-a]pyridin-6-amine (Step 67.4) (2 g, 12.33 mmol), 4-chlorobenzaldehyde (1.576 g, 11.21 mmol) and ethyl 2,4-dioxopentanoate (1.773 g, 11.21 mmol) in acetic acid (10 mL) was stirred for 2 hr at 100° C. The reaction mixture was concentrated, diluted with CH2Cl2/1N NaOH and extracted with CH2Cl2. The combined organic layers were dried over Na2SO4, evaporated and discarded as they contained no desired product. The aqueous was acidified to pH 3 with 6N HCl and extracted with CH2Cl2. The combined organic extracts were dried over Na2SO4 and concentrated to afford the title compound (3.88 g, 8.80 mmol, 79% yield) as a beige foam. tR: 0.70 min (LC-MS 2); ESI-MS: 397 [M+H]+ (LC-MS 2); 1H NMR (400 MHz, DMSO-d6) δ ppm 2.36 (s, 3H) 2.44 (s, 3H) 2.63 (s, 3H) 6.14 (s, 1H) 7.27 (d, J=8.44 Hz, 2H) 7.33-7.40 (m, 3H) 8.53 (s, 1H).

後処理

  1. concentrationThe reaction mixture was concentrated
  2. additiondiluted with CH2Cl2/1N NaOH
  3. extractionextracted with CH2Cl2
  4. dry with materialThe combined organic layers were dried over Na2SO4
  5. customevaporated
  6. extractionextracted with CH2Cl2
  7. dry with materialThe combined organic extracts were dried over Na2SO4
  8. concentrationconcentrated

出典と根拠

ORDレコード
ord-9d6c9abe45054eff8b53b91cf599c4fd
出典データセット
uspto-grants-2015_03
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08975417B2

反応ノート

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このページの内容参加物反応条件実験手順後処理出典と根拠反応ノート