Acetic Acid → 1-[1-[3-(3,4-Dichlorophenyl)-4-(2-phenyl-1,3,4-triazol-1-yl)butyl]piperidin-4-yl]tetrahydropyrimidin-2-one hydrochloride

HRID 1977812Notes

Reaction equation

HRID 1977812 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([CH:9]([CH2:13][N:14]2[CH:18]=[N:17][N:16]=[C:15]2[C:19]2[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=2)[CH2:10][CH:11]=O)[CH:5]=[CH:6][C:7]=1[Cl:8].[NH:25]1[CH2:30][CH2:29][CH:28]([N:31]2[CH2:36][CH2:35][CH2:34][NH:33][C:32]2=[O:37])[CH2:27][CH2:26]1.C(O)(=O)C.C([BH3-])#N.[Na+]>CO.C(=O)(O)[O-].[Na+]>[ClH:1].[Cl:1][C:2]1[CH:3]=[C:4]([CH:9]([CH2:13][N:14]2[CH:18]=[N:17][N:16]=[C:15]2[C:19]2[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=2)[CH2:10][CH2:11][N:25]2[CH2:30][CH2:29][CH:28]([N:31]3[CH2:36][CH2:35][CH2:34][NH:33][C:32]3=[O:37])[CH2:27][CH2:26]2)[CH:5]=[CH:6][C:7]=1[Cl:8]

Participants

7

Reactant 4

HCID 176Acetic AcidHCID 5003444Sodium cyanoborohydrideHCID 155726661-(Piperidin-4-yl)-1,3-diazinan-2-oneHCID 183142783-(3,4-Dichlorophenyl)-4-(2-phenyl-1,3,4-triazol-1-yl)butyraldehyde

Product 1

HCID 98726411-[1-[3-(3,4-Dichlorophenyl)-4-(2-phenyl-1,3,4-triazol-1-yl)butyl]piperidin-4-yl]tetrahydropyrimidin-2-one hydrochlorideYield 159.7%

Reagents, catalysts & solvents 2

HCID 887MethanolSolvent3×HCID 516892Sodium BicarbonateSolvent

Procedure

3-(3,4-Dichlorophenyl)-4-(2-phenyl-1,3,4-triazol-1-yl)butyraldehyde (0.80 g) in methanol (4 mL) was added to a solution of 1-(piperidin-4-yl)tetrahydropyrimidin-2-one (0.408 g) and acetic acid (0.13 mL) in methanol (4 mL). After 40 minutes, sodium cyanoborohydride (0.140 g) in methanol (4 mL) was added in a single portion. After being stirred overnight, the reaction mixture was diluted with aqueous sodium bicarbonate, stirred for 30 minutes, and extracted with dichloromethane. The organic extracts were dried, evaporated, and chromatographed, with dichloromethane:methanol (gradient 95:5, 70:30) as eluent. The purified material was dissolved in dichloromethane, precipitated out as the hydrochloride salt with ethereal hydrogen chloride, evaporated, and placed under high vacuum overnight to give the title compound as a white solid (1.0 g); NMR (CD3OD): 9.55 (s,1), 7.74 (m,1), 7.62 (m,2), 7.42 (m,2), 7.29 (d,1, J=8.3), 7.16 (d,1, J=2.1), 6.89 (dd,1, J=2.1, 8.3), 4.83 (dd,1, J=4.7, 14.3), 4.64 (dd,1, J=10.2, 14.2), 4.36 (m,1), 3.60 (m,2), 3.26 (m,5), 3.03 (m,3), 2.75 (m,1), 2.22 (m,4), 1.91 (m,4); MS: m/z=527(M+1). Analysis for C27H32Cl2N6O·4.20HCl·0.20 Et2O: Calculated: C, 48.01; H, 5.53; N, 12.08; Found: C, 48.09; H, 5.64; N, 12.06.

Workup

  1. stirringstirred for 30 minutes
  2. extractionextracted with dichloromethane
  3. customThe organic extracts were dried
  4. customevaporated
  5. customchromatographed, with dichloromethane
  6. dissolutionThe purified material was dissolved in dichloromethane
  7. customprecipitated out as the hydrochloride salt with ethereal hydrogen chloride
  8. customevaporated
  9. customplaced under high vacuum overnight

Sources & evidence

ORD record
ord-a205b8a2996547d3861ab12498257419
Source dataset
uspto-grants-2001_05
Patent number
US06235757B1

Reaction notes

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