4-Methoxybenzylamine → 6-bromo-8-cyclopentyl-2-(4-methoxy-benzylamino)-5-methyl-8H-pyrido[2,3-d]pyrimidin-7-one

HRID 272522Notes

Reaction equation

HRID 272522 reaction equation
[Br:1][C:2]1[C:14](=[O:15])[N:13]([CH:16]2[CH2:20][CH2:19][CH2:18][CH2:17]2)[C:5]2[N:6]=[C:7](S(C)=O)[N:8]=[CH:9][C:4]=2[C:3]=1[CH3:21].[CH3:22][O:23][C:24]1[CH:31]=[CH:30][C:27]([CH2:28][NH2:29])=[CH:26][CH:25]=1>C1(C)C=CC=CC=1>[Br:1][C:2]1[C:14](=[O:15])[N:13]([CH:16]2[CH2:20][CH2:19][CH2:18][CH2:17]2)[C:5]2[N:6]=[C:7]([NH:29][CH2:28][C:27]3[CH:30]=[CH:31][C:24]([O:23][CH3:22])=[CH:25][CH:26]=3)[N:8]=[CH:9][C:4]=2[C:3]=1[CH3:21]

Participants

4

Reactant 2

HCID 754524-MethoxybenzylamineHCID 113721276-bromo-8-cyclopentyl-5-methyl-2-(methylsulfinyl)pyrido[2,3-d]pyrimidin-7(8H)-one

Product 1

HCID 223297816-bromo-8-cyclopentyl-2-(4-methoxy-benzylamino)-5-methyl-8H-pyrido[2,3-d]pyrimidin-7-oneYield 86.9%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

A suspension of 6-bromo-8-cyclopentyl-2-methanesulfinyl-5-methyl-8H-pyrido[2,3-d]pyrimidin-7-one (1.00 g, 2.70 mmol) and 4-methoxybenzylamine (0.39 mL, 4.0 mmol) in toluene (15 mL) was heated under reflux for 2 hours. The solution was cooled, and the resulting solid was collected by filtration to give 6-bromo-8-cyclopentyl-2-(4-methoxy-benzylamino)-5-methyl-8H-pyrido[2,3-d]pyrimidin-7-one (1.04 g, 86.4%). 1H NMR δ(400 MHz, CDCl3) 1.6 (m, 2H), 1.8 (m, 2H), 2.0 (m, 2H), 2.2 (m, 2H), 2.53 (s, 3H), 3.79 (s, 3H), 4.59 (m, 2H), 5.96 (m, 1H), 6.1 (m, 1H), 6.86 (d, J=8.3 Hz, 2H), 7.27 (d, J=8.1 Hz, 2H), 8.5 (br s, 1H). MS (APCl) (C21H23Br1N4O2): Calc for M+H, 443. 1; Found, 443.1

Workup

  1. temperaturewas heated
  2. temperatureunder reflux for 2 hours
  3. temperatureThe solution was cooled
  4. filtrationthe resulting solid was collected by filtration

Sources & evidence

ORD record
ord-dbda769db39c4698aae26669d80b47f0
Source dataset
uspto-grants-2008_11
Patent number
US07456168B2

Reaction notes

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