Triethylamine → 2,2,2-Trifluoro-N-((1S,4R)-4-hydroxy-1,2,3,4-tetrahydro-naphthalen-1-yl)-acetamide

Degassed DMF (argon sparged, 100 mL) was added to Intermediate Ab (8.00 g, 31.3 mmol) and [N-[(1R,2R)-2-(amino-κN)-1,2-diphenylethyl]-4-methylbenzenesulfonamidato-κN]chloro[(1,2,3,4,5,6-η)-1-methyl-4-(1-methylethyl)benzene]-ruthenium (Strem Chemicals Inc.; 594 mg, 0.93 mmol). Triethylamine (8.66 mL, 62.6 mmol) was added slowly to ice cold formic acid (2.34 mL, 62.6 mmol) and stirred for 20 min, this was then added to the DMF solution. The reaction was heated to 60° C. for 18 h. After cooling, the mixture was partitioned between DCM (200 mL) and water (600 mL). The aqueous layer was extracted DCM (3×) and the combined organic layers washed with brine, dried (MgSO4) and concentrated in vacuo. Purification by FCC, using 0-100% EtOAc in cyclohexane, afforded the title compound (7.10 g, 27.4 mmol, 88%). 1H NMR (400 MHz, CDCl3): 1.88-1.92 (1H, d, J 4.8 Hz), 1.98-2.18 (4H, m), 4.80-4.88 (1H, m), 5.165-5.24 (1H, m), 6.70-6.80 (1H, br s), 7.25-7.30 (1H, m), 7.30-7.40 (2H, m), 7.45-7.50 (1H, m).

1. customDegassed DMF (argon sparged, 100 mL)
2. temperatureAfter cooling
3. customthe mixture was partitioned between DCM (200 mL) and water (600 mL)
4. extractionThe aqueous layer was extracted DCM (3×)
5. washthe combined organic layers washed with brine
6. dry with materialdried (MgSO4)
7. concentrationconcentrated in vacuo
8. customPurification by FCC

ORD-Eintrag

ord-5da78243a0ca4af0b11cc9a51778c389

Quelldatensatz

uspto-grants-2016_04

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US09315503B2