Piperazine → HCID 44609033, compound

HRID 1943728Notes

Reaction equation

HRID 1943728 reaction equation
[Br:1][C:2]1[CH:3]=[C:4]([C:11]([N:13]2[CH2:18][CH2:17][O:16][C:15]3[N:19]=[CH:20][C:21]([C:23]4[CH:28]=[CH:27][CH:26]=[C:25]([C:29]([F:32])([F:31])[F:30])[CH:24]=4)=[CH:22][C:14]2=3)=[O:12])[CH:5]=[C:6]([Br:10])[C:7]=1[O:8]C.[Br-].[Li+].N1CCNCC1>CN(C)C=O>[Br:1][C:2]1[CH:3]=[C:4]([C:11]([N:13]2[CH2:18][CH2:17][O:16][C:15]3[N:19]=[CH:20][C:21]([C:23]4[CH:28]=[CH:27][CH:26]=[C:25]([C:29]([F:30])([F:32])[F:31])[CH:24]=4)=[CH:22][C:14]2=3)=[O:12])[CH:5]=[C:6]([Br:10])[C:7]=1[OH:8]

Participants

5

Reactant 3

HCID 4837PiperazineHCID 82050Lithium BromideHCID 66936604HCID 66936604, compound

Product 1

HCID 44609033HCID 44609033, compound

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

By the same method as in the step d) of Example 45, (3,5-dibromo-4-methoxy-phenyl)-[7-(3-trifluoromethyl-phenyl)-2,3-dihydro-pyrido[2,3-b][1,4]oxazin-1-yl]-methanone (165 mg, 0.29 mmol), lithium bromide (100 mg, 1.15 mmol) and piperazine (37.3 mg, 0.43 mmol) were dissolved in N,N-dimethyl formamide (2 ml) and reacted at 100□ to obtain the target compound 63, i.e., (3,5-dibromo-4-hydroxy-phenyl)-[7-(3-trifluoromethyl-phenyl)-2,3-dihydro-pyrido[2,3-b][1,4]oxazin-1-yl]-methanone, as white solid (90 mg, 56%).

Workup

  1. customreacted at 100□

Sources & evidence

ORD record
ord-24567c5e7d0d40b0b17375c51d54adc6
Source dataset
uspto-grants-2013_03
Patent number
US08394792B2

Reaction notes

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