Hydrochloric Acid → HCID 178418960, compound

HRID 1743170Notes

Reaction equation

HRID 1743170 reaction equation
C[O:2][C:3]([C:5]1[CH:6]=[C:7]([NH:10][C:11]2[C:20]3[C:15](=[CH:16][CH:17]=[CH:18][CH:19]=3)[N:14]=[C:13]([C:21]3[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=3)[N:12]=2)[NH:8][N:9]=1)=O.[BH4-].[Li+].Cl.C(=O)([O-])O.[Na+]>C1COCC1.C(OCC)(=O)C>[OH:2][CH2:3][C:5]1[CH:6]=[C:7]([NH:10][C:11]2[C:20]3[C:15](=[CH:16][CH:17]=[CH:18][CH:19]=3)[N:14]=[C:13]([C:21]3[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=3)[N:12]=2)[NH:8][N:9]=1

Participants

7

Reactant 4

HCID 313Hydrochloric AcidHCID 516892Sodium BicarbonateHCID 4148881Lithium borohydrideHCID 178418998HCID 178418998, compound

Product 1

HCID 178418960HCID 178418960, compound

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

A solution of (5-Methoxycarbonyl-2H-pyrazol-3-yl)-(2-phenyl-quinazolin-4-yl)-amine (III-73) (345 mg, 1 mmol) in anhydrous THF (10 mL) was treated with lithium borohydride (125 mg, 5.75 mmol) at 65° C. for 5 hours. The mixture was cooled to room temperature then combined with 2M HCl and ethyl acetate. Solid sodium hydrogen carbonate was added to achieve pH 8 and the resulting mixture extracted with ethyl acetate. The extracts were dried over magnesium sulphate and concentrated. Purification by flash chromatography (SiO2, methanol-dichloromethane gradient) afforded III-74 (95 mg, 30%) as an off-white solid: mp 238-239° C.; 1H NMR (DMSO) δ 4.58 (2H, d, CH2), 5.35 (1H, s, OH), 6.94 (1H, s), 7.50-7.60 (4H, m), 7.85-7.90 (2H, m), 8.48-8.54 (2H, m), 8.69 (1H, 1H), 10.40 (1H, s), 12.48 (1H, s); IR (solid) 1652, 1621, 1603, 1575, 1558, 1539, 1532, 1480, 1373, 1320, 1276, 1175, 1057, 1037, 1007, 951, 865, 843, 793, 780, 7124; MS 318.2(M+H)+.

Workup

  1. extractionthe resulting mixture extracted with ethyl acetate
  2. dry with materialThe extracts were dried over magnesium sulphate
  3. concentrationconcentrated
  4. customPurification by flash chromatography (SiO2, methanol-dichloromethane gradient)
  5. customafforded III-74 (95 mg, 30%) as an off-white solid

Sources & evidence

ORD record
ord-8ce92bd191094cf2b82007f4e085f656
Source dataset
uspto-grants-2006_03
Patent number
US07008948B2

Reaction notes

Loading…