Methanol → HCID 18697900, compound

To a solution of 2-amino-4-trifluoromethylbenzoic acid (4.56 g, 22.2 mmol), prepared in the step (a), in tetrahydrofuran (100 ml) were added 10 M borane-dimethyl sulfide complex (4.4 ml, 44.0 mmol) and trimethyl borate (10 ml). The mixture was stirred under ice cooling for 10 min, at room temperature for 15 min, and at 45° C. for 17 hr. Subsequently, 2 ml of 10 M borane-dimethyl sulfide complex was added thereto, and a reaction was allowed to proceed at 45° C. for 15 hr. Thereafter, methanol was added to the reaction mixture under ice cooling to terminate the reaction. The reaction mixture was concentrated under reduced pressure, and the resultant powder was collected by filtration, washed with hexane, and then dried to give 2-amino-4-trifluoromethyl-1-hydroxymethylbenzene (4.08 g, 96%) as yellowish green powder.

1. waitat 45° C. for 17 hr
2. additionSubsequently, 2 ml of 10 M borane-dimethyl sulfide complex was added
3. waitto proceed at 45° C. for 15 hr
4. customto terminate
5. customthe reaction
6. concentrationThe reaction mixture was concentrated under reduced pressure
7. filtrationthe resultant powder was collected by filtration
8. washwashed with hexane
9. customdried

ORD record

ord-a8aed7e2f9834000a716fb290c744609

Source dataset

uspto-grants-2000_07

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US06093714