Ethyl orthoformate → methyl 2-methyl-5-(1H-tetrazol-1-yl)benzoate

HRID 343539Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 343539
[CH3:1][C:2]1[CH:11]=[CH:10][C:9]([NH2:12])=[CH:8][C:3]=1[C:4]([O:6][CH3:7])=[O:5].[CH:13](OCC)(OCC)OCC.[N-:23]=[N+:24]=[N-:25].[Na+]>C(O)(=O)C.O>[CH3:1][C:2]1[CH:11]=[CH:10][C:9]([N:12]2[CH:13]=[N:25][N:24]=[N:23]2)=[CH:8][C:3]=1[C:4]([O:6][CH3:7])=[O:5]

Komponenten

6

Reaktionsbedingungen

Temperatur
70 °C

Versuchsvorschrift

Combine methyl 2-methyl-5-aminobenzoate (4.5 g, 27.2 mmol) and triethyl orthoformate (16.2 g, 109 mmol) in glacial acetic acid (25 mL). After 12 hours, add portionwise sodium azide (7.08 g, 109 mmol). Heat to 70° C. After 2 hours, cool the reaction mixture to ambient temperature, dilute with water (250 mL). Collect the solid by filtration, rinse with water, and dry to give methyl 2-methyl-5-(1H-tetrazol-1-yl)benzoate: Rf =0.13 (silica gel, ethyl acetate/hexane 1/4).

Aufarbeitung

  1. waitAfter 2 hours
  2. temperaturecool the reaction mixture to ambient temperature
  3. customCollect the solid
  4. filtrationby filtration
  5. washrinse with water
  6. customdry

Quellen und Nachweise

ORD-Eintrag
ord-148f08f81ffa4a379f252e4b53434a20
Quelldatensatz
uspto-grants-1999_01
Patentnummer
US05861417

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