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

HRID 1272026Notes

Reaction equation

HRID 1272026 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 (APCI) (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-0ef8229234e643c28ef79da12c571515
Source dataset
uspto-grants-2007_04
Patent number
US07208489B2

Reaction notes

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