Nitrogen → HCID 18467343, compound

HRID 1080032Notes

Reaction equation

HRID 1080032 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]([N:18]4[C:27]5[C:22](=[CH:23][CH:24]=[CH:25][CH:26]=5)[CH2:21][CH2:20][CH2:19]4)=O)[CH2:11][CH2:10]3)=[N:7][O:8][C:4]=2[CH:3]=1.[H-].[Al+3].[Li+].[H-].[H-].[H-].N#N.[C:38]([OH:45])(=[O:44])/[CH:39]=[CH:40]/[C:41]([OH:43])=[O:42]>C1COCC1.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]([CH2:15][CH2:16][N:18]4[C:27]5[C:22](=[CH:23][CH:24]=[CH:25][CH:26]=5)[CH2:21][CH2:20][CH2:19]4)[CH2:13][CH2:14]3)=[N:7][O:8][C:4]=2[CH:3]=1

Participants

7

Reactant 4

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

Product 1

HCID 18467343HCID 18467343, compound

Reagents, catalysts & solvents 2

HCID 702EthanolSolvent2×HCID 8028TetrahydrofuranSolvent

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-3b5835954b1e45159aa6621f39e4796d
Source dataset
uspto-grants-1996_12
Patent number
US05580890

Reaction notes

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