Hydrochloric Acid → 4-(7-chloro-2H-benzopyran-3-sulfonyl)-1-(piperidin-4-ylmethyl)-2-piperazinone hydrochloride

HRID 2186155Notes

Reaction equation

HRID 2186155 reaction equation
C(OC([N:8]1[CH2:13][CH2:12][CH:11]([CH2:14][N:15]2[CH2:20][CH2:19][N:18]([S:21]([C:24]3[CH2:25][O:26][C:27]4[CH:33]=[C:32]([Cl:34])[CH:31]=[CH:30][C:28]=4[CH:29]=3)(=[O:23])=[O:22])[CH2:17][C:16]2=[O:35])[CH2:10][CH2:9]1)=O)(C)(C)C.Cl>C(OCC)(=O)C.CO>[ClH:34].[Cl:34][C:32]1[CH:31]=[CH:30][C:28]2[CH:29]=[C:24]([S:21]([N:18]3[CH2:19][CH2:20][N:15]([CH2:14][CH:11]4[CH2:10][CH2:9][NH:8][CH2:13][CH2:12]4)[C:16](=[O:35])[CH2:17]3)(=[O:22])=[O:23])[CH2:25][O:26][C:27]=2[CH:33]=1

Participants

5

Reactant 2

HCID 313Hydrochloric AcidHCID 234473471-[1-(tert-butoxycarbonyl)piperidin-4-ylmethyl]-4-(7-chloro-2H-benzopyran-3-sulfonyl)-2-piperazinone

Product 1

HCID 234473484-(7-chloro-2H-benzopyran-3-sulfonyl)-1-(piperidin-4-ylmethyl)-2-piperazinone hydrochlorideYield 198.4%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 8857Ethyl AcetateSolvent

Procedure

To 1-[1-(tert-butoxycarbonyl)piperidin-4-ylmethyl]-4-(7-chloro-2H-benzopyran-3-sulfonyl)-2-piperazinone (1.856 g) were added 4N hydrochloric acid in ethyl acetate (40 ml) and methanol (25 ml), and the mixture was stirred at room temperature for 30 minutes. The reaction solution was concentrated to give colorless crystals of 4-(7-chloro-2H-benzopyran-3-sulfonyl)-1-(piperidin-4-ylmethyl)-2-piperazinone hydrochloride (1.618 g).

Workup

  1. concentrationThe reaction solution was concentrated

Sources & evidence

ORD record
ord-b61a1abe1d254ac8aec578bacab4a3fd
Source dataset
uspto-grants-2002_06
Patent number
US06403595B1

Reaction notes

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