Hydrochloric Acid → HCID 86610561, compound

HRID 506337Notes

Reaction equation

HRID 506337 reaction equation
[CH2:1]([O:3][C:4]([N:6]1[C:15]2[C:10](=[N:11][C:12]([O:16][CH3:17])=[CH:13][CH:14]=2)[C@@H:9]([NH:18][C:19]2[N:24]=[C:23]([CH2:25][C:26]3[CH:31]=[C:30]([C:32]([F:35])([F:34])[F:33])[CH:29]=[C:28]([C:36]([F:39])([F:38])[F:37])[CH:27]=3)[C:22]([N:40]3[CH2:45][CH2:44][CH:43]([C:46]([O:48]CC)=[O:47])[CH2:42][CH2:41]3)=[CH:21][N:20]=2)[CH2:8][C@H:7]1[CH2:51][CH3:52])=[O:5])[CH3:2].[OH-].[K+].Cl>C(O)C.C(OCC)(=O)C>[CH2:1]([O:3][C:4]([N:6]1[C:15]2[C:10](=[N:11][C:12]([O:16][CH3:17])=[CH:13][CH:14]=2)[C@@H:9]([NH:18][C:19]2[N:24]=[C:23]([CH2:25][C:26]3[CH:31]=[C:30]([C:32]([F:33])([F:34])[F:35])[CH:29]=[C:28]([C:36]([F:37])([F:38])[F:39])[CH:27]=3)[C:22]([N:40]3[CH2:41][CH2:42][CH:43]([C:46]([OH:48])=[O:47])[CH2:44][CH2:45]3)=[CH:21][N:20]=2)[CH2:8][C@H:7]1[CH2:51][CH3:52])=[O:5])[CH3:2]

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 14797Potassium HydroxideHCID 86610562HCID 86610562, compound

Product 1

HCID 86610561HCID 86610561, compoundYield 89.1%

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
50 °C

Procedure

To a solution of (2R*,4S*)-4-{[3,5-bis(trifluoromethyl)benzyl]-[5-(4-ethoxycarbonylpiperidin-1-yl)pyrimidin-2-yl]}amino-2-ethyl-6-methoxy-3,4-dihydro-2H-[1,5]naphthyridine-1-carboxylic acid ethyl ester (245 mg) in ethanol (2 ml) is added aqueous 2N-potassium hydroxide solution (0.332 ml) and the mixture is heated under reflux at 50° C. for 1 hour. The reaction solution is diluted with ethyl acetate and acidified with 1N-hydrochloric acid. The organic layer is washed with a saturated brine, dried over magnesium sulfate, and concentrated under reduced pressure. The resulting residue is purified by column chromatography (silica gel; chloroform to chloroform:methanol=90:10) to give (2R*,4S*)-4-{[3,5-bis(trifluoromethyl)benzyl]-[5-(4-carboxypiperidin-1-yl) pyrimidin-2-yl]}amino-2-ethyl-6-methoxy-3,4-dihydro-2H-[1,5]naphthyridine-1-carboxylic acid ethyl ester (210 mg). MS (m/z): 711 [M+H]+.

Workup

  1. temperaturethe mixture is heated
  2. washThe organic layer is washed with a saturated brine
  3. dry with materialdried over magnesium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe resulting residue is purified by column chromatography (silica gel; chloroform to chloroform:methanol=90:10)

Sources & evidence

ORD record
ord-ac5219f49ca244a1b677d0b14fa017ae
Source dataset
uspto-grants-2010_08
Patent number
US07781443B2

Reaction notes

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