Hydrochloric Acid → 1-{4-[(2H-1,3-benzodioxol-5-ylmethyl)amino]-6-chloroquinazolin-2-yl}piperidine-4-carboxylic acid hydrochloride

HRID 1900692

Reaction equation

HRID 1900692 reaction equation
[C:1]([CH:4]1[CH2:9][CH2:8][N:7]([C:10]2[N:19]=[C:18]([NH:20][CH2:21][C:22]3[CH:27]=[CH:26][C:25]4[O:28][CH2:29][O:30][C:24]=4[CH:23]=3)[C:17]3[C:12](=[CH:13][CH:14]=[C:15]([Cl:31])[CH:16]=3)[N:11]=2)[CH2:6][CH2:5]1)([OH:3])=[O:2].Cl>O1CCCC1.C(O)C>[ClH:31].[C:1]([CH:4]1[CH2:9][CH2:8][N:7]([C:10]2[N:19]=[C:18]([NH:20][CH2:21][C:22]3[CH:27]=[CH:26][C:25]4[O:28][CH2:29][O:30][C:24]=4[CH:23]=3)[C:17]3[C:12](=[CH:13][CH:14]=[C:15]([Cl:31])[CH:16]=3)[N:11]=2)[CH2:6][CH2:5]1)([OH:3])=[O:2]

Participants

5

Reactant 2

HCID 313Hydrochloric AcidHCID 53114861-(6-Chloro-4-(3,4-methylenedioxybenzyl)aminoquinazolin-2-yl)piperidine-4-carboxylic acid

Product 1

HCID 211839871-{4-[(2H-1,3-benzodioxol-5-ylmethyl)amino]-6-chloroquinazolin-2-yl}piperidine-4-carboxylic acid hydrochlorideYield 172.6%

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 8028TetrahydrofuranSolvent

Procedure

2.00 g (4.54 mmol) of the 2-(4-carboxy-piperidino)-4-(3,4-methylenedioxybenzylamino)-6-chloroquinazoline prepared in Example 222 was dissolved in a mixture comprising 25 ml of tetrahydrofuran and 25 ml of ethanol under heating, followed by the dropwise addition of 1.0 ml of an 8M ethanolic solution of hydrochloric acid. The obtained mixture was cooled by allowing to stand to precipitate crystals. The crystals were recovered by filtration, washed with tetrahydrofuran, and air-dried to give 1.87 g of the title compound.

Workup

  1. temperatureunder heating
  2. temperatureThe obtained mixture was cooled
  3. customto precipitate crystals
  4. filtrationThe crystals were recovered by filtration
  5. washwashed with tetrahydrofuran
  6. customair-dried

Sources & evidence

ORD record
ord-d0e4aa5a3f75414bb53fa265afda8f3d
Source dataset
uspto-grants-1996_11
Patent number
US05576322

Linked notes

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