IP Library › Granted Patent US 6,998,483
Granted Patent B2
US 6,998,483 · App. 11/124,452 · Granted Feb 14, 2006

Process for the preparation of sulphonamide-substituted imidazotriazinones

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Quick Facts
Patent No.
US 6,998,483
App. No.
11/124,452
Granted
Feb 14, 2006
Kind
B2
Abstract

The present invention relates to a process for the preparation of sulphonamide-substituted imidazotriazinones of the general formula (I) characterized in that compounds of the formula (II) are reacted with sulphuric acid and the products obtained are then reacted with thionyl chloride and converted in situ in an inert solvent using an amine into the compounds according to the invention and, if appropriate, reacted to give the corresponding salts, hydrates or N-oxides.

Claims (1)

1. A compound 4-ethoxy-3-(5-methyl-4-oxo-7-propyl-3,4-dihydroimidazol[5,1-fl-[1,2,4]triazin-2-yl)benzenesulphonic acid

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 1, 2013
From: BAYER PHARMA AKTIENGESELLSCHAFT
To: BAYER INTELLECTUAL PROPERTY GMBH
Reel/Frame 029908/0217 →
CHANGE OF NAME Recorded Apr 23, 2012
From: BAYER SCHERING PHARMA AKTIENGESELLSCHAFT
To: BAYER PHARMA AKTIENGESELLSCHAFT
Reel/Frame 028093/0091 →
CONFIRMATORY ASSIGNMENT Recorded Apr 23, 2012
From: BAYER PHARMA AKTIENGESELLSCHAFT
To: BAYER INTELLECTUAL PROPERTY GMBH
Reel/Frame 028093/0393 →
MERGER Recorded Jan 12, 2010
From: BAYER HEALTHCARE AG
To: BAYER SCHERING PHARMA AKTIENGESELLSCHAFT
Reel/Frame 023769/0122 →