Acetic Acid → HCID 44377347, compound

To a solution of 1H-inden-2(3H)-one (6.00 g, 45.4 mmol) in methanol (100 ml) was added diethylamine (6.64 g, 91 mmol), sodium cyanotrihydroborate (5.71 g, 91 mmol) and acetic acid (5.45 g, 91 mmol). The reaction mixture was stirred overnight and concentrated. The residue was diluted with methylene chloride, washed with saturated aqueous NaHCO3 (2×50 mL), dried over Na2SO4, filtered, and concentrated. The resulting residue was dissolved in 1M aqueous HCl (100 ml), and extracted with methylene chloride (2×50 mL). The aqueous layer was treated with 6N aqueous NaOH solution until the pH=14 and was extracted with methylene chloride (4×100 mL). The combined organic layers were dried over Na2SO4, filtered, and concentrated to provide the title compound.

1. concentrationconcentrated
2. additionThe residue was diluted with methylene chloride
3. washwashed with saturated aqueous NaHCO3 (2×50 mL)
4. dry with materialdried over Na2SO4
5. filtrationfiltered
6. concentrationconcentrated
7. dissolutionThe resulting residue was dissolved in 1M aqueous HCl (100 ml)
8. extractionextracted with methylene chloride (2×50 mL)
9. additionThe aqueous layer was treated with 6N aqueous NaOH solution until the pH=14
10. extractionwas extracted with methylene chloride (4×100 mL)
11. dry with materialThe combined organic layers were dried over Na2SO4
12. filtrationfiltered
13. concentrationconcentrated

ORD record

ord-110d962b4c8545b7a09366949444b47e

Source dataset

uspto-grants-2014_04

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08710065B2