Sulfuric Acid → Ethyl 7-chloro-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylate

HRID 2358561노트

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HRID 2358561 반응식
[CH2:1]([O:3][C:4]([C:6]1[C:15](=[O:16])[C:14]2[C:9](=[N:10][C:11]([Cl:17])=[CH:12][CH:13]=2)[N:8](C(C)(C)C)[CH:7]=1)=[O:5])[CH3:2].S(=O)(=O)(O)O>C(O)(C(F)(F)F)=O>[CH2:1]([O:3][C:4]([C:6]1[C:15](=[O:16])[C:14]2[C:9](=[N:10][C:11]([Cl:17])=[CH:12][CH:13]=2)[NH:8][CH:7]=1)=[O:5])[CH3:2]

참가 물질

4

반응물 2

HCID 1118Sulfuric AcidHCID 86615483HCID 86615483, 화합물

생성물 1

HCID 12804018Ethyl 7-chloro-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylate수율 93.1%

시약·촉매·용매 1

HCID 6422Trifluoroacetic acid촉매

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온도
70 °C

실험 절차

The product from Example 13a (0.282 gm, 0.91 mmol) was combined at room temperature with 2 mL of TFA containing 2 drops of sulfuric acid. The resulting mixture was heated at 70° C. for 16.5 h. The volatiles were removed under vacuum and the residue suspended in water. The product was collected by vacuum filtration, water washed and dried under vacuum to give the title compound as a cream colored solid (0.214 gm, 93%).

후처리

  1. customThe volatiles were removed under vacuum
  2. filtrationThe product was collected by vacuum filtration, water
  3. washwashed
  4. customdried under vacuum

출처 및 근거

ORD 기록
ord-d8126da9162d48519f4e7823a605ce00
출처 데이터셋
uspto-grants-2010_07
특허 번호
US07763731B2

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