反应详情

(S)-methyl-2-(1-methylethylsulfonamido)-2,3-dihydro-1H-indene-5-carboxylate (2.502 mmol, 744 mg) was dissolved in dry THF (20 mL) and was purged with nitrogen and cooled in an ice bath. Lithium aluminium hydride (7.51 mmol, 7.51 mL) was added dropwise and stirring continued at 0° C. for 10 min. The mixture was quenched by addition of methanol followed by 1:1 THF/water and 1N HCl before concentration to remove organics. The residue was partitioned between dichlormethane/1N HCl. and the phases mixed and separated. The aqueous layer was further extracted with DCM (×2) Combined organics washed with brine and concentrated before purification on silica eluting with 2% MeOH/DCM to give (S)—N-(5-(hydroxymethyl)-2,3-dihydro-1H-inden-2-yl)propane-2-sulfonamide (0.692 g, 103%). 1H NMR (400 MHz, CDCl3) δ 1.39 (d, 6H) 1.71 (bt, 1H) 2.89 (m, 2H) 3.18 (sept, 1H) 3.30 (m, 2H) 4.28 (m, 1H) 4.41 (m, 1H) 4.66 (d, 2H) 7.18 (m, 2H) 7.24 (m, 1H)

1. customwas purged with nitrogen
2. temperaturecooled in an ice bath
3. customThe mixture was quenched by addition of methanol
4. concentrationfollowed by 1:1 THF/water and 1N HCl before concentration
5. customto remove organics
6. customThe residue was partitioned between dichlormethane/1N HCl
7. additionand the phases mixed
8. customseparated
9. extractionThe aqueous layer was further extracted with DCM (×2)
10. washCombined organics washed with brine
11. concentrationconcentrated before purification on silica eluting with 2% MeOH/DCM