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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 272463
Notes
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Reaction equation

HRID 272463 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 C18H19BrN6O.0.2H2O: 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-fa91249b3985490b8206df69023cea64
Source dataset
uspto-grants-2008_11
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07456168B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes