Reaction equation
[Cl:1][C:2]1[CH:19]=[CH:18][C:5]([NH:6][C:7]2[S:8][C:9]3[N:17]=[CH:16][CH:15]=[CH:14][C:10]=3[C:11](=[O:13])[N:12]=2)=[CH:4][CH:3]=1.[H-].[Li+].[CH3:22][O:23][C:24]1[CH:25]=[C:26]([CH:29]=[CH:30][CH:31]=1)[CH2:27]Cl>CN(C=O)C>[Cl:1][C:2]1[CH:19]=[CH:18][C:5]([N:6]([C:7]2[S:8][C:9]3[N:17]=[CH:16][CH:15]=[CH:14][C:10]=3[C:11](=[O:13])[N:12]=2)[CH2:27][C:26]2[CH:29]=[CH:30][CH:31]=[C:24]([O:23][CH3:22])[CH:25]=2)=[CH:4][CH:3]=1Participants
5
Procedure
The reaction procedure of Example 11 was followed except that 2.681 g (9.25 mmol) of 2-(4-chloroanilino)-4H-pyrido[3,2-e]-1,3-thiazin-4-one, 162 mg of lithium hydride, 1.50 g of 3-methoxybenzyl chloride and 40 ml of DMF were used. The resulting residue was then purified through silica gel column chromatography (eluant: chloroform). As a result, 2.288 of 2-[N-(4-chlorophenylimino)-2,3-dihydro-4H-3-(3-methoxybenzyl)pyrido[3,2-e]-1,3-thiazin-4-one (recrystallized from ethanol) was obtained as a low polarity substance, and 843 mg of 2-[N-(4-chlorophenyl)-N-(3-methoxybenzyl)amino]-4H-pyrido[3,2-e]-1,3-thiazin-4-one (recrystallized from a mixture of ethyl acetate and diisopropyl ether) was obtained as a high polarity substance.
Workup
- customThe reaction procedure of Example 11
- customThe resulting residue was then purified through silica gel column chromatography (eluant: chloroform)
Sources & evidence
- ORD record
- ord-c5ed689f8c674c58a630c28b85b77de5
- Source dataset
- uspto-grants-2000_10
- Patent number
- US06133258
Linked notes
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