Isopropylamine → 1-(3-bromophenyl)-N-isopropyl-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxamide
Reaction equation
[Br:1][C:2]1[CH:3]=[C:4]([N:8]2[C:17]3[C:12](=[CH:13][CH:14]=[CH:15][N:16]=3)[C:11](=[O:18])[C:10]([C:19](O)=[O:20])=[CH:9]2)[CH:5]=[CH:6][CH:7]=1.C(N(CC)CC)C.ClC(OCC(C)C)=O.[CH:37]([NH2:40])([CH3:39])[CH3:38]>O1CCCC1>[CH:37]([NH:40][C:19]([C:10]1[C:11](=[O:18])[C:12]2[C:17](=[N:16][CH:15]=[CH:14][CH:13]=2)[N:8]([C:4]2[CH:5]=[CH:6][CH:7]=[C:2]([Br:1])[CH:3]=2)[CH:9]=1)=[O:20])([CH3:39])[CH3:38]Participants
6
Reactant 4
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 0 °C
Procedure
To a suspension of 1-(3-bromophenyl)-1,4-dihydro[1,8]naphthyridin-4-one-3-carboxylic acid from Step 3 (1 eq) and triethylamine (3 eq) in tetrahydrofuran (0.08M) at 0° C. was added isobutyl chloroformate (1.8 eq). After stirring at 0° C. for 2 hours, isopropylamine (5 eq) was added and the mixture was allowed to warm up to room temperature and stirred overnight. The mixture was then partitioned between ethyl acetate and water, the organic phase was dried and evaporated to a solid which was stirred in ether at room temperature for 3 hours and filtered to afford the N-Isopropyl-1-(3-bromophenyl)-1,4-dihydro[1,8]naphthyridin-4-one-3-carboxamide as a white solid.
Workup
- temperatureto warm up to room temperature
- stirringstirred overnight
- customThe mixture was then partitioned between ethyl acetate and water
- customthe organic phase was dried
- customevaporated to a solid which
- stirringwas stirred in ether at room temperature for 3 hours
- filtrationfiltered
Sources & evidence
- ORD record
- ord-a3e0b48b05044fbc9f21bfb1deccda9d
- Source dataset
- uspto-grants-2007_07
- Patent number
- US07238706B2
Reaction notes
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