3-Aminobenzoic Acid → Benzoic acid, 3-[[(methylamino)thioxomethyl]amino]-
Reaktionsgleichung
[NH2:1][C:2]1[CH:3]=[C:4]([CH:8]=[CH:9][CH:10]=1)[C:5]([OH:7])=[O:6].[CH3:11][N:12]=[C:13]=[S:14]>C(O)(=O)C>[CH3:11][NH:12][C:13](=[S:14])[NH:1][C:2]1[CH:3]=[C:4]([CH:8]=[CH:9][CH:10]=1)[C:5]([OH:7])=[O:6]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Reaktionsbedingungen
- Temperatur
- 82.5 °C
Versuchsvorschrift
A mixture of 279.6 g of 3-amino-benzoic acid, 164.1 g of methyl isothiocyanate and 1000 g of 100% acetic acid is heated to 80-85° C. The temperature rises to 95-100° C. in the course of 20 minutes without further heating, and a clear solution from which the product slowly crystallizes out forms. The suspension is kept at 90-100° C. for 2 hours, subsequently cooled to 15-20° C. and filtered with suction and the material on the suction filter is washed with acetic acid. 404 g of the title compound result, purity: 99.5%, melting point: 190-91° C., decomposition. Yield: 95.7% of theory.