Hydrochloric Acid → 6-(biphenyl-4-yl)-4-(3-ethoxy-4-hydroxy-5-nitrophenyl)-5-phenyl-3,4-dihydropyrimidin-2(1H)-one

HRID 401015Notes

Reaction equation

HRID 401015 reaction equation
[C:1]1([C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)[CH:6]=[CH:5][C:4]([C:7](=O)[CH2:8][C:9]2[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=2)=[CH:3][CH:2]=1.[CH2:22]([O:24][C:25]1[CH:26]=[C:27]([CH:30]=[C:31]([N+:34]([O-:36])=[O:35])[C:32]=1[OH:33])[CH:28]=O)[CH3:23].[NH2:37][C:38]([NH2:40])=[O:39].Cl>CCO>[C:1]1([C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)[CH:6]=[CH:5][C:4]([C:7]2[NH:40][C:38](=[O:39])[NH:37][CH:28]([C:27]3[CH:30]=[C:31]([N+:34]([O-:36])=[O:35])[C:32]([OH:33])=[C:25]([O:24][CH2:22][CH3:23])[CH:26]=3)[C:8]=2[C:9]2[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=2)=[CH:3][CH:2]=1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 1176UreaHCID 748171-(1,1'-Biphenyl)-4-yl-2-phenylethan-1-one2×HCID 5848783-Ethoxy-4-hydroxy-5-nitrobenzaldehyde

Product 1

HCID 513479336-(biphenyl-4-yl)-4-(3-ethoxy-4-hydroxy-5-nitrophenyl)-5-phenyl-3,4-dihydropyrimidin-2(1H)-oneYield 14.3%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

A mixture of 1-(biphenyl-4-yl)-2-phenylethanone (Intermediate 14) (100 mg, 0.37 mmol), 3-ethoxy-4-hydroxy-5-nitrobenzaldehyde (65 mg, 0.31 mmol), urea (66 mg, 1.1 mmol), and concentrated HCl solution (0.03 mL, 0.37 mmol) in EtOH (5 mL) was refluxed overnight. The mixture was evaporated in vacuo, and purified by preparative HPLC to give Compound 34 (22.52 mg, yield 14%). 1H NMR (DMSO-d6 300 MHz): δ 10.33 (s, 1H), 8.79 (s, 1H), 7.66 (d, J=8.4 Hz, 2H), 7.61-7.58 (m, 3H), 7.47-7.43 (m, 3H), 7.37 (d, J=6.9 Hz, 1H), 7.30 (d, J=8.4 Hz, 2H), 7.22 (s, 1H), 7.09-7.02 (m, 3H), 6.89 (d, J=7.8 Hz, 2H), 5.21 (d, J=2.7 Hz, 1H), 4.06 (q, J=3.6 Hz, 2H), 1.34 (t, J=6.9 Hz, 3H); MS (ESI): m/z 508.1 [M+1]+.

Workup

  1. temperaturewas refluxed overnight
  2. customThe mixture was evaporated in vacuo
  3. custompurified by preparative HPLC

Sources & evidence

ORD record
ord-dd32f214bd1d45cfaca08b64ab28c6ab
Source dataset
uspto-grants-2014_06
Patent number
US08741915B2

Reaction notes

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