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Sulfuric Acid → (4S,6S)-4-(5-((3-chloro-1,7-naphthyridin-8-yl)amino)-2-fluorophenyl)-4-(fluoromethyl)-6-(trifluoromethyl)-5,6-dihydro-4H-1,3-oxazin-2-amine

HRID 930284
ノート
印刷プレビュー

反応式

HRID 930284 の反応式
[NH2:1][C:2]1[CH:3]=[CH:4][C:5]([F:21])=[C:6]([C@:8]2([CH2:19][F:20])[CH2:13][C@@H:12]([C:14]([F:17])([F:16])[F:15])[O:11][C:10]([NH2:18])=[N:9]2)[CH:7]=1.[Cl:22][C:23]1[CH:24]=[N:25][C:26]2[C:31]([CH:32]=1)=[CH:30][CH:29]=[N:28][C:27]=2Cl.CC(O)C.S(=O)(=O)(O)O>O.CCOC(C)=O>[Cl:22][C:23]1[CH:24]=[N:25][C:26]2[C:31]([CH:32]=1)=[CH:30][CH:29]=[N:28][C:27]=2[NH:1][C:2]1[CH:3]=[CH:4][C:5]([F:21])=[C:6]([C@:8]2([CH2:19][F:20])[CH2:13][C@@H:12]([C:14]([F:17])([F:15])[F:16])[O:11][C:10]([NH2:18])=[N:9]2)[CH:7]=1
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

7

反応物 4

HCID 1118Sulfuric AcidHCID 3776IsopropanolHCID 722135953,8-Dichloro-1,7-naphthyridine2 回HCID 86732112(4S,6S)-4-(5-amino-2-fluorophenyl)-4-(fluoromethyl)-6-(trifluoromethyl)-5,6-dihydro-4H-1,3-oxazin-2-amine

生成物 1

HCID 86732113(4S,6S)-4-(5-((3-chloro-1,7-naphthyridin-8-yl)amino)-2-fluorophenyl)-4-(fluoromethyl)-6-(trifluoromethyl)-5,6-dihydro-4H-1,3-oxazin-2-amine
収率 24.85%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 8857Ethyl Acetate溶媒

反応条件

温度
55 °C

実験手順

A sealable vial was charged with crude (4S,6S)-4-(5-amino-2-fluorophenyl)-4-(fluoromethyl)-6-(trifluoromethyl)-5,6-dihydro-4H-1,3-oxazin-2-amine (345 mg, 1.116 mmol, step 1) and 3,8-dichloro-1,7-naphthyridine (Intermediate 2; 233 mg, 1.171 mmol). iPrOH (8 mL) was added and the suspension was briefly sonicated. Sulfuric acid (0.059 mL, 1.116 mmol, Aldrich) was added and the vial was sealed. The reaction was heated to 55° C. in an oil bath for one hour then cooled to RT and stirred for additional 16 hours. The reaction was diluted with water and EtOAc. The aqueous layer separated was basified to pH=12 by the addition of 1N NaOH. The aqueous layer was extracted with EtOAc (3×). The combined organic layers were washed with brine, dried over magnesium sulfate and concentrated under reduced pressure. The crude material was purified via silica gel chromatography using a gradient of 0-50% EtOAc:Hexanes to afford the title compound as a white solid. (130.8 mg, 0.277 mmol, 24.85% yield). MS m/z=472.0 [M+H]+. Calculated for C20H15ClF5N5O: 471.811

後処理

  1. customthe suspension was briefly sonicated
  2. customthe vial was sealed
  3. temperaturethen cooled to RT
  4. customThe aqueous layer separated
  5. additionwas basified to pH=12 by the addition of 1N NaOH
  6. extractionThe aqueous layer was extracted with EtOAc (3×)
  7. washThe combined organic layers were washed with brine
  8. dry with materialdried over magnesium sulfate
  9. concentrationconcentrated under reduced pressure
  10. customThe crude material was purified via silica gel chromatography

出典と根拠

ORDレコード
ord-a191cc72fb4444da98eb33c4ad6cc16b
出典データセット
uspto-grants-2016_03
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US09296734B2

反応ノート

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