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

HRID 924801Notes

Reaction equation

HRID 924801 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-365dc2e5da2f48489384a79b86549bb2
Source dataset
uspto-grants-2016_03
Patent number
US09283229B2

Reaction notes

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