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

HRID 924800Notes

Reaction equation

HRID 924800 reaction equation
[Br:1][C:2]1[CH:7]=[CH:6][C:5]([C:8](=O)[CH2:9][C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)=[CH:4][CH:3]=1.[CH2:17]([O:19][C:20]1[CH:21]=[C:22]([CH:25]=[C:26]([N+:29]([O-:31])=[O:30])[C:27]=1[OH:28])[CH:23]=O)[CH3:18].[NH2:32][C:33]([NH2:35])=[O:34].Cl>CCO>[Br:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[NH:35][C:33](=[O:34])[NH:32][CH:23]([C:22]3[CH:25]=[C:26]([N+:29]([O-:31])=[O:30])[C:27]([OH:28])=[C:20]([O:19][CH2:17][CH3:18])[CH:21]=3)[C:9]=2[C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)=[CH:4][CH:3]=1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 1176UreaHCID 5197381-(4-Bromophenyl)-2-phenylethanoneHCID 5848783-Ethoxy-4-hydroxy-5-nitrobenzaldehyde

Product 1

HCID 513479326-(4-bromophenyl)-4-(3-ethoxy-4-hydroxy-5-nitrophenyl)-5-phenyl-3,4-dihydropyrimidin-2(1H)-oneYield 34%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

A mixture of 1-(4-bromophenyl)-2-phenylethanone (100 mg, 0.36 mmol), 3-ethoxy-4-hydroxy-5-nitrobenzaldehyde (64 mg, 0.30 mmol), urea (55 mg, 0.91 mmol), and concentrated HCl solution (0.03 mL, 0.36 mmol) in EtOH (5 mL) was refluxed overnight. The mixture was evaporated in vacuo, and purified by preparative HPLC to give Compound 33 (52.12 mg, yield 34%). 1H NMR (DMSO-d6 400 MHz): δ 10.29 (s, 1H), 8.78 (s, 1H), 7.56 (s, 1H), 7.46-7.42 (m, 3H), 7.15-7.13 (m, 3H), 7.09-7.03 (m, 3H), 6.84 (d, J=6.8 Hz, 2H), 5.21 (d, J=2.0 Hz, 1H), 4.07-3.99 (m, 2H), 2.23 (s, 3H), 1.33 (t, J=6.8 Hz, 3H); MS (ESI): m/z 511.9 [M+1]+.

Workup

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

Sources & evidence

ORD record
ord-3660c56d866e4278ad1a6940e0e753a1
Source dataset
uspto-grants-2016_03
Patent number
US09283229B2

Reaction notes

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