Water → (4aS,8aR)-4-(3,4-Dimethoxy-phenyl)-2-[1-(2-ethenesulfonyl-ethyl)-piperidin-4-yl]-4a,5,8,8a-tetrahydro-2H-phthalazin-1-one

HRID 585483

Reaction equation

HRID 585483 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([C:11]2[C@@H:20]3[C@@H:15]([CH2:16][CH:17]=[CH:18][CH2:19]3)[C:14](=[O:21])[N:13]([CH:22]3[CH2:27][CH2:26][NH:25][CH2:24][CH2:23]3)[N:12]=2)[CH:6]=[CH:7][C:8]=1[O:9][CH3:10].Br[CH2:29][CH2:30][S:31]([CH2:34][CH2:35]Br)(=[O:33])=[O:32].C(=O)([O-])[O-].[K+].[K+].O>CN(C)C=O>[CH3:1][O:2][C:3]1[CH:4]=[C:5]([C:11]2[C@@H:20]3[C@@H:15]([CH2:16][CH:17]=[CH:18][CH2:19]3)[C:14](=[O:21])[N:13]([CH:22]3[CH2:27][CH2:26][N:25]([CH2:35][CH2:34][S:31]([CH:30]=[CH2:29])(=[O:33])=[O:32])[CH2:24][CH2:23]3)[N:12]=2)[CH:6]=[CH:7][C:8]=1[O:9][CH3:10]

Participants

6

Reactant 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 1390521-Bromo-2-(2-bromoethanesulfonyl)ethaneHCID 68878852(4aS,8aR)-4-(3,4-Dimethoxy-phenyl)-2-piperidin-4-yl-4a,5,8,8a-tetrahydro-2H-phthalazin-1-one

Product 1

HCID 69794500(4aS,8aR)-4-(3,4-Dimethoxy-phenyl)-2-[1-(2-ethenesulfonyl-ethyl)-piperidin-4-yl]-4a,5,8,8a-tetrahydro-2H-phthalazin-1-one

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A solution of 10 mmol of compound 5c, 10 mmol of 1-bromo-2-(2-bromo-ethanesulfonyl)-ethane and 30 mmol of potassium carbonate in 30 ml of dimethylformamide is stirred at RT. After 18 h, the mixture is poured into water (150 ml) and subsequently extracted with ethyl acetate. Crystallisation from diethyl ether. M. p. 165-166° C.

Workup

  1. extractionsubsequently extracted with ethyl acetate
  2. customCrystallisation from diethyl ether

Sources & evidence

ORD record
ord-bdbb32fed643458fa56fb083084babee
Source dataset
uspto-grants-2005_08
Patent number
US06933296B2

Linked notes

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