Formic Acid → Benzoic acid, 3-(methylamino)-, methyl ester

Temperatur

0 °C

A solution of formic acid (106 mL) and acetic anhydride (53.0 mL) was stirred at room temperature for 1 h. Methyl 3-aminobenzoate (8.50 g, 56.2 mmol) was added and the resulting mixture was stirred overnight. The reaction mixture was then concentrated under reduced pressure to give a solid. The solid was dissolved in THF (50.0 mL) and this solution was cooled to 0° C. Borane dimethylsulfide (10.7 mL, 112 mmol) was added slowly and the resulting mixture was stirred at room temperature overnight. The reaction mixture was then cooled to 0° C. and MeOH (10 mL) was added slowly. This mixture was stirred for 3 hours and then concentrated under reduced pressure to give the title compound, which was used without any further purification.

1. concentrationThe reaction mixture was then concentrated under reduced pressure
2. customto give a solid
3. stirringthe resulting mixture was stirred at room temperature overnight
4. temperatureThe reaction mixture was then cooled to 0° C.
5. stirringThis mixture was stirred for 3 hours
6. concentrationconcentrated under reduced pressure

ORD-Eintrag

ord-e3b6c453bc4c4e2a8a2b8134e0794570

Quelldatensatz

uspto-grants-2012_03

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08138345B2