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

HRID 586474Notes

Reaction equation

HRID 586474 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]([CH2:31][O:32]C(=O)C)[C:28](=[O:36])[N:27]([CH:37]5[CH2:41][CH2:40][CH2:39][CH2:38]5)[C:25]=4[N:26]=3)=[CH:18][CH:19]=2)[CH2:10][CH2:9]1)=O)(C)(C)C.C(Cl)(Cl)[Cl:43]>>[ClH:43].[CH:37]1([N:27]2[C:25]3[N:26]=[C:21]([NH:20][C:17]4[CH:18]=[CH:19][C:14]([N:11]5[CH2:10][CH2:9][NH:8][CH2:13][CH2:12]5)=[CH:15][N:16]=4)[N:22]=[CH:23][C:24]=3[CH:30]=[C:29]([CH2:31][OH:32])[C:28]2=[O:36])[CH2:38][CH2:39][CH2:40][CH2:41]1

Participants

3

Reactant 2

HCID 6212ChloroformHCID 113764404-[6-(6-Acetoxymethyl-8-cyclopentyl-7-oxo-7,8-dihydro-pyrido[2,3-d]pyrimidin-2-ylamino)-pyridin-3-yl]-piperazine-1-carboxylic acid tert-butyl ester

Product 1

HCID 101516728-cyclopentyl-6-hydroxymethyl-2-(5-piperazin-1-yl-pyridin-2-ylamino)-8H-pyrido[2,3-d]pyrimidin-7-one hydrochlorideYield 93%

Procedure

4-[6-(6-Acetoxymethyl-8-cyclopentyl-7-oxo-7,8-dihydro-pyrido[2,3-d]pyrimidin-2-ylamino)-pyridin-3-yl]-piperazine-1-carboxylic acid tert-butyl ester (0.21 g, 0.36 mmol), prepared as in Example 28, was dissolved in 1:1 chloroform:methanol (8 ml), and the solution was purged with anhydrous hydrogen chloride gas then allowed to stir for 3 hours at room temperature. This mixture was added to diethyl ether (50 ml) to give a solid which was collected by filtration, washed with diethyl ether, then dried in vacuo to provide 8-cyclopentyl-6-hydroxymethyl-2-(5-piperazin-1-yl-pyridin-2-ylamino)-8H-pyrido[2,3-d]pyrimidin-7-one hydrochloride as a solid (0.17 g, 93%). MS (APCI); M++1: Calc'd, 422.5. Found, 422.2. Analyses for C22H27N7O2.1.0 H2O.2.0HCl: Calc'd: C, 51.56; H, 6.10; N, 19.13; Cl (ionic), 13.84; H2O, 3.51. Found: C, 51.13; H, 5.95; N, 19.05; Cl (ionic), 13.70; H2O, 0.67.

Workup

  1. custommethanol (8 ml), and the solution was purged with anhydrous hydrogen chloride gas
  2. additionThis mixture was added to diethyl ether (50 ml)
  3. customto give a solid which
  4. filtrationwas collected by filtration
  5. washwashed with diethyl ether
  6. customdried in vacuo

Sources & evidence

ORD record
ord-1305b47b99ce48cf8e72e59ddb4d7598
Source dataset
uspto-grants-2005_08
Patent number
US06936612B2

Reaction notes

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