Hydrochloric Acid → 2-(4-(3-Ethoxy-4-hydroxy-5-nitrophenyl)-2-oxo-6-phenyl-1,2,3,4-tetrahydropyrimidin-5-yl)benzonitrile

HRID 924831Notes

Reaction equation

HRID 924831 reaction equation
Br[C:2]1[CH:7]=[CH:6][C:5]([C:8]2[NH:13][C:12](=[O:14])[NH:11][CH:10]([C:15]3[CH:20]=[C:19]([N+:21]([O-:23])=[O:22])[C:18]([OH:24])=[C:17]([O:25][CH2:26][CH3:27])[CH:16]=3)[C:9]=2[C:28]2[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=2)=[CH:4][CH:3]=1.C(OC1C=C(C=[C:43]([N+:46]([O-])=O)C=1O)C=O)C.NC(N)=O.Cl>CCO>[CH2:26]([O:25][C:17]1[CH:16]=[C:15]([CH:10]2[C:9]([C:28]3[CH:33]=[CH:32][CH:31]=[CH:30][C:29]=3[C:43]#[N:46])=[C:8]([C:5]3[CH:6]=[CH:7][CH:2]=[CH:3][CH:4]=3)[NH:13][C:12](=[O:14])[NH:11]2)[CH:20]=[C:19]([N+:21]([O-:23])=[O:22])[C:18]=1[OH:24])[CH3:27]

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 1176UreaHCID 5848783-Ethoxy-4-hydroxy-5-nitrobenzaldehydeHCID 513479326-(4-bromophenyl)-4-(3-ethoxy-4-hydroxy-5-nitrophenyl)-5-phenyl-3,4-dihydropyrimidin-2(1H)-one2×

Product 1

HCID 513485182-(4-(3-Ethoxy-4-hydroxy-5-nitrophenyl)-2-oxo-6-phenyl-1,2,3,4-tetrahydropyrimidin-5-yl)benzonitrileYield 29%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

A mixture of 2-(2-oxo-2-phenylethyl)benzonitrile (Intermediate 33) (100 mg, 0.45 mmol), 3-ethoxy-4-hydroxy-5-nitrobenzaldehyde (87 mg, 0.41 mmol), urea (81 mg, 1.36 mmol), and concentrated HCl solution (0.03 mL, 0.41 mmol) in EtOH (5 mL) was refluxed overnight. The mixture was concentrated, and purified by preparative HPLC to give Compound 70 (54.26 mg, yield 29%) as a yellow solid. 1H NMR (DMSO-d6 300 MHz): δ10.24 (s, 1H), 8.91 (s, 1H), 7.61 (s, 1H), 7.51-7.44 (m, 2H), 7.31 (s, 1H), 7.24-7.16 (m, 4H), 7.13-7.08 (m, 3H), 5.37 (s, 1H), 3.99-3.93 (m, 2H), 1.31 (t, J=6.8 Hz, 3H); MS (ESI): m/z 456.8 [M+1]+.

Workup

  1. temperaturewas refluxed overnight
  2. concentrationThe mixture was concentrated
  3. custompurified by preparative HPLC

Sources & evidence

ORD record
ord-760e4157bea4425383b068b67f47528c
Source dataset
uspto-grants-2016_03
Patent number
US09283229B2

Reaction notes

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