Potassium Carbonate → 3-(mercaptomethyl)benzoic acid

Temperature

60 °C

Into a 500-mL round-bottom flask, was placed a solution of 3-(acetylthiomethyl)benzoic acid (16.4 g, 78.10 mmol, 1.00 equiv) in methanol (150 mL), and a solution of potassium carbonate (26.9 g, 194.93 mmol, 2.50 equiv) in water (70 mL). The resulting solution was stirred for 4 h at 60° C. The resulting mixture was concentrated under vacuum. The resulting solution was diluted with 200 mL of water and adjusted to pH 3 with 10% hydrochloric acid. The resulting solution was extracted with 3× (100/20 mL) of ethyl acetate/tetrahydrofuran and the organic layers combined. The resulting mixture was washed with 1×100 mL of brine. The mixture was dried over sodium sulfate and concentrated under vacuum. This resulted in 12 g (91%) of 3-(mercaptomethyl)benzoic acid as a brown solid.

1. customInto a 500-mL round-bottom flask, was placed
2. concentrationThe resulting mixture was concentrated under vacuum
3. additionThe resulting solution was diluted with 200 mL of water
4. extractionThe resulting solution was extracted with 3× (100/20 mL) of ethyl acetate/tetrahydrofuran
5. washThe resulting mixture was washed with 1×100 mL of brine
6. dry with materialThe mixture was dried over sodium sulfate
7. concentrationconcentrated under vacuum
8. customThis resulted in 12 g (91%) of 3-(mercaptomethyl)benzoic acid as a brown solid

ORD record

ord-7af24018cd254fb99e0107fb916c3bcf

Source dataset

uspto-grants-2014_12

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08916569B2