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2,6-Diaminopyridine → 2-(6-amino-pyridin-2-ylamino)-6-bromo-8-cyclopentyl-5-methyl-8H-pyrido[2,3-d]pyrimidin-7-one

HRID 1271970
Notes
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Reaction equation

HRID 1271970 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].[NH2:22][C:23]1[CH:28]=[CH:27][CH:26]=[C:25]([NH2:29])[N:24]=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:22][C:23]3[CH:28]=[CH:27][CH:26]=[CH:25][N:24]=3)[N:8]=[CH:9][C:4]=2[C:3]=1[CH3:21].[NH2:22][C:23]1[N:24]=[C:25]([NH:29][C:7]2[N:8]=[CH:9][C:4]3[C:3]([CH3:21])=[C:2]([Br:1])[C:14](=[O:15])[N:13]([CH:16]4[CH2:20][CH2:19][CH2:18][CH2:17]4)[C:5]=3[N:6]=2)[CH:26]=[CH:27][CH:28]=1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 2

HCID 88612,6-DiaminopyridineHCID 113721276-bromo-8-cyclopentyl-5-methyl-2-(methylsulfinyl)pyrido[2,3-d]pyrimidin-7(8H)-one

Product 2

HCID 53302836-Bromo-8-cyclopentyl-5-methyl-2-(pyridin-2-ylamino)-8H-pyrido[2,3-d]pyrimidin-7-oneHCID 101269592-(6-amino-pyridin-2-ylamino)-6-bromo-8-cyclopentyl-5-methyl-8H-pyrido[2,3-d]pyrimidin-7-oneYield 18.8%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Conditions

Temperature
120 °C

Procedure

A mixture of 6-bromo-8-cyclopentyl-2-methanesulfinyl-5-methyl-8H-pyrido[2,3-d]pyrimidin-7-one (370 mg, 1.0 mmol) and 2,6-diaminopyridine (163 mg, 1.5 mmol) in toluene (5 mL) was heated at 120° C. overnight. The solid formed upon cooling was collected by filtration, washed with toluene and sonicated in hot MeOH. After filtration the solid was dried further to give the desired product 2-(6-amino-pyridin-2-ylamino)-6-bromo-8-cyclopentyl-5-methyl-8H-pyrido[2,3-d]pyrimidin-7-one (39 mg, 9.3%). mp: >274.6˜276° C. Calc'd for C18H19BrN5O.0.2 H2O: C, 51.61; H, 4.67; N, 20.06. Found: C, 51.42; H, 4.44; N, 19.87.

Workup

  1. customThe solid formed
  2. temperatureupon cooling
  3. filtrationwas collected by filtration
  4. washwashed with toluene
  5. customsonicated in hot MeOH
  6. filtrationAfter filtration the solid
  7. customwas dried further

Sources & evidence

ORD record
ord-e3512e45421a432c882ee901167b79d2
Source dataset
uspto-grants-2007_04
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07208489B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes