Sodium hydride → HCID 90386966, compound

HRID 1476835Notes

Reaction equation

HRID 1476835 reaction equation
[OH:1][C@H:2]1[CH2:6][CH2:5][N:4]([C:7]([O:9][C:10]([CH3:13])([CH3:12])[CH3:11])=[O:8])[CH2:3]1.[H-].[Na+].Cl[C:17]1[C:26]2[C:21](=[CH:22][CH:23]=[CH:24][CH:25]=2)[CH:20]=[C:19]([Cl:27])[N:18]=1>CN1C(=O)CCC1.O>[Cl:27][C:19]1[N:18]=[C:17]([O:1][C@H:2]2[CH2:6][CH2:5][N:4]([C:7]([O:9][C:10]([CH3:13])([CH3:12])[CH3:11])=[O:8])[CH2:3]2)[C:26]2[C:21]([CH:20]=1)=[CH:22][CH:23]=[CH:24][CH:25]=2

Participants

6

Reactant 3

HCID 24758Sodium hydrideHCID 2986251,3-DichloroisoquinolineHCID 854055tert-Butyl (3S)-3-hydroxypyrrolidine-1-carboxylate

Product 1

HCID 90386966HCID 90386966, compoundYield 300.3%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 13387N-methyl-2-pyrrolidoneSolvent

Conditions

Temperature
135 °C

Procedure

To (S)-tert-butyl 3-hydroxypyrrolidine-1-carboxylate (1.134 g, 6.06 mmol) in NMP (10 mL) at 0° C. was added NaH (60%) (202 mg, 5.05 mmol). The mixture was stirred for 5 minutes and 1,3-dichloroisoquinoline (1.000 g, 5.05 mmol) was added. The reaction mixture was stirred at RT for 5 minutes and then heated at 135° C. for 30 minutes in a microwave reactor. The mixture was diluted with water (400 mL) and extracted with EtOAc (3×125 mL). The organic layers were combined, washed with brine, dried over Na2SO4, filtered, and concentrated in vacuo. The crude product was purified by silica column chromatography eluting with a gradient of 25-50% EtOAc in hexane to give the title compound (5.29 g, 75%). 1H NMR (500 MHz, DMSO-d6) δ ppm 1.40 (d, J=14.16 Hz, 9H), 2.12-2.34 (m, 2H), 3.42-3.58 (m, 3H), 3.69 (td, J=12.33, 4.64 Hz, 1H), 5.63-5.76 (m, 1H), 7.59 (s, 1H), 7.64 (ddd, J=8.30, 7.08, 1.22 Hz, 1H), 7.81 (td, J=7.57, 1.46 Hz, 1H), 7.87-7.92 (m, 1H), 8.11-8.19 (m, 1H); ESI-MS m/z [M+H-tert-butyl]+ 293.5.

Workup

  1. stirringThe reaction mixture was stirred at RT for 5 minutes
  2. extractionextracted with EtOAc (3×125 mL)
  3. washwashed with brine
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe crude product was purified by silica column chromatography
  8. washeluting with a gradient of 25-50% EtOAc in hexane

Sources & evidence

ORD record
ord-938d04f31b63431d8d4748f2f121256b
Source dataset
uspto-grants-2016_08
Patent number
US09402841B2

Reaction notes

Loading…