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

HRID 586553Notes

Reaction equation

HRID 586553 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 68 (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-c2597177757444d58c3bbf99a39265b3
Source dataset
uspto-grants-2005_08
Patent number
US06936612B2

Reaction notes

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