Diethyl Ether → 6-bromo-8-cyclopentyl-2-(5-piperazin-1-yl-pyridin-2-ylamino)-8H-pyrido[2,3-d]pyrimidin-7-one hydrochloride

HRID 272415Notes

Reaction equation

HRID 272415 reaction equation
C(OC([N:8]1[CH2:13][CH2:12][N:11]([C:14]2[CH:15]=[N:16][C:17]([NH:20][C:21]3[N:22]=[CH:23][C:24]4[CH:30]=[C:29]([Br:31])[C:28](=[O:32])[N:27]([CH:33]5[CH2:37][CH2:36][CH2:35][CH2:34]5)[C:25]=4[N:26]=3)=[CH:18][CH:19]=2)[CH2:10][CH2:9]1)=O)(C)(C)C.C(OCC)C.C(Cl)(Cl)[Cl:44].CO>>[ClH:44].[Br:31][C:29]1[C:28](=[O:32])[N:27]([CH:33]2[CH2:37][CH2:36][CH2:35][CH2:34]2)[C:25]2[N:26]=[C:21]([NH:20][C:17]3[CH:18]=[CH:19][C:14]([N:11]4[CH2:12][CH2:13][NH:8][CH2:9][CH2:10]4)=[CH:15][N:16]=3)[N:22]=[CH:23][C:24]=2[CH:30]=1

Participants

4

Reactant 3

HCID 3283Diethyl EtherHCID 113765404-[6-(6-Bromo-8-cyclopentyl-7-oxo-7,8-dihydro-pyrido[2,3-d]pyrimidin-2-ylamino)-pyridin-3-yl]-piperazine-1-carboxylic acid tert-butyl esterHCID 21584188Chloroform methanol

Product 1

HCID 101960146-bromo-8-cyclopentyl-2-(5-piperazin-1-yl-pyridin-2-ylamino)-8H-pyrido[2,3-d]pyrimidin-7-one hydrochloride

Procedure

4-[6-(6-Bromo-8-cyclopentyl-7-oxo-7,8-dihydro-pyrido[2,3-d]pyrimidin-2-ylamino)-pyridin-3-yl]-piperazine-1-carboxylic acid tert-butyl ester (0.26 g, 0.46 mmol) prepared as in Example 2 was dissolved in 1:1 chloroform/methanol (15 ml), to which was added diethyl ether (25 ml). The solution was purged with anhydrous hydrogen chloride gas and stoppered for 18 hours. The resulting white solid was filtered, washed with diethyl ether and dried in vacuo at 60° C. to give 6-bromo-8-cyclopentyl-2-(5-piperazin-1-yl-pyridin-2-ylamino)-8H-pyrido[2,3-d]pyrimidin-7-one hydrochloride as a pale yellow solid (0.254 g). MS (APCI); M++1: Calc, 470.12. Found, 470.0. Analyses for C21H24BrN2O.1.25H2O.2.2HCl: Calc'd: C, 44.01; H, 5.05; N, 17.11, Cl (ionic), 13.61; H2O, 3.93. Found: C, 43.74; H, 5.07; N, 16.78; Cl (ionic), 13.73 ; H2O, 3.81.

Workup

  1. customThe solution was purged with anhydrous hydrogen chloride gas
  2. filtrationThe resulting white solid was filtered
  3. washwashed with diethyl ether
  4. customdried in vacuo at 60° C.

Sources & evidence

ORD record
ord-31b19f5ad5b140488fb32ad922cd2cfc
Source dataset
uspto-grants-2008_11
Patent number
US07456168B2

Reaction notes

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