Nitrogen → HCID 86750148, compound

HRID 233259Notes

Reaction equation

HRID 233259 reaction equation
[F:1][C:2]1[CH:29]=[CH:28][C:5]2[C:6]([CH:9]3[CH2:14][CH2:13][N:12]([CH2:15][C:16](N4C5C(=CC=CC=5)CCC4)=O)[CH2:11][CH2:10]3)=[N:7][O:8][C:4]=2[CH:3]=1.[H-].[Al+3].[Li+].[H-].[H-].[H-].[N:36]#N.[C:38]([OH:45])(=[O:44])/[CH:39]=[CH:40]/[C:41]([OH:43])=[O:42].[CH2:46]1[CH2:50]OC[CH2:47]1>C(O)C>[C:38]([OH:45])(=[O:44])/[CH:39]=[CH:40]/[C:41]([OH:43])=[O:42].[F:1][C:2]1[CH:29]=[CH:28][C:5]2[C:6]([CH:9]3[CH2:10][CH2:11][N:12]([CH:15]4[CH2:16][CH2:50][C:46]5[C:38](=[CH:39][CH:40]=[CH:41][CH:47]=5)[NH:36]4)[CH2:13][CH2:14]3)=[N:7][O:8][C:4]=2[CH:3]=1

Participants

7

Reactant 5

HCID 947NitrogenHCID 8028TetrahydrofuranHCID 444972Fumaric AcidHCID 15285676HCID 15285676, compoundHCID 21226445Aluminium lithium hydride

Product 1

HCID 86750148HCID 86750148, compound

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent2×

Procedure

To a stirred solution of 2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]-1-(1,2,3,4-tetrahydroquinolin-1-yl)ethanone (5.5 g, 14 mmol) in THF (50 ml) was charged with lithium aluminum hydride (17 ml, 17 mmol, 1M in ether) dropwise under N2 at room temperature. The mixture was stirred for 8 hours at room temperature. At the end of this period the excess of hydride was quenched with ice chips and 3 ml of 20% NaOH. The mixture was diluted with EtOAc (150 ml) and stirred for 1 hour. The EtOAc was dried with MgSO4 and filtered. The solvent was removed to dryness. The residue was purified by flash chromatography over a silica gel column (SiO2, 55 g; eluted with 1-3% CH3OH: DCM). The product thus obtained weighed 1.83 g. This material was dissolved into hot ethanol and was treated with a solution of fumaric acid (700 mg) in ethanol. The crystals were collected and weighed 1.85 g, m.p. 192°-193° C.

Workup

  1. customAt the end of this period the excess of hydride was quenched with ice chips and 3 ml of 20% NaOH
  2. additionThe mixture was diluted with EtOAc (150 ml)
  3. stirringstirred for 1 hour
  4. dry with materialThe EtOAc was dried with MgSO4
  5. filtrationfiltered
  6. customThe solvent was removed to dryness
  7. customThe residue was purified by flash chromatography over a silica gel column (SiO2, 55 g; eluted with 1-3% CH3OH: DCM)
  8. customThe product thus obtained
  9. customThe crystals were collected

Sources & evidence

ORD record
ord-bc83fea2dcb349e59d911f16616e52a6
Source dataset
uspto-grants-1997_01
Patent number
US05591745

Reaction notes

Loading…