Stannous Chloride → 3-[2-(2,2-Difluoro-benzo[1,3]dioxol-4-yl)-2H-pyrazol-3-yl]-1-(3-methanesulfonyl-phenyl)-1H-pyridazin-4-one

HRID 1924593Notes

Reaction equation

HRID 1924593 reaction equation
C[N:2](C)/[CH:3]=[CH:4]/[C:5]([C:7]1[C:12](=[O:13])[CH:11]=[CH:10][N:9]([C:14]2[CH:19]=[CH:18][CH:17]=[C:16]([S:20]([CH3:23])(=[O:22])=[O:21])[CH:15]=2)[N:8]=1)=O.[F:25][C:26]1([F:37])[O:30][C:29]2[CH:31]=[CH:32][CH:33]=[C:34]([NH:35]N)[C:28]=2[O:27]1.N([O-])=O.[Na+].[Sn](Cl)Cl>>[F:37][C:26]1([F:25])[O:30][C:29]2[CH:31]=[CH:32][CH:33]=[C:34]([N:35]3[C:5]([C:7]4[C:12](=[O:13])[CH:11]=[CH:10][N:9]([C:14]5[CH:19]=[CH:18][CH:17]=[C:16]([S:20]([CH3:23])(=[O:22])=[O:21])[CH:15]=5)[N:8]=4)=[CH:4][CH:3]=[N:2]3)[C:28]=2[O:27]1

Participants

5

Reactant 4

HCID 24479Stannous ChlorideHCID 23668193Sodium NitriteHCID 55279040(2,2-Difluoro-benzo[1,3]dioxol-4-yl)hydrazineHCID 593701713-((E)-3-Dimethylamino-acryloyl)-1-(3-methansulfonyl-phenyl)-1H-pyridazin-4-one

Product 1

HCID 593701443-[2-(2,2-Difluoro-benzo[1,3]dioxol-4-yl)-2H-pyrazol-3-yl]-1-(3-methanesulfonyl-phenyl)-1H-pyridazin-4-one

Procedure

The product was obtained starting from 3-((E)-3-Dimethylamino-acryloyl)-1-(3-methansulfonyl-phenyl)-1H-pyridazin-4-one (A-7) and 2,2-difluoro-benzo[1,3]dioxol-4-yl-hydrazine (prepared from the corresponding amino derivative using sodium nitrite and tin(II) chloride as described in J. Med. Chem. 2003, 46, 4676-4686) according to the method described for example 91. MS: M=473.2 (M+H)+

Workup

  1. customThe product was obtained

Sources & evidence

ORD record
ord-34b9781426c040199818becddfca5dd6
Source dataset
uspto-grants-2012_05
Patent number
US08178538B2

Reaction notes

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