4-[2-methyl-4-(5-methyl-1,2,4-oxadiazol-3-yl)phenyl]benzoic Acid → N-[4-(2-Dimethylaminoethyl)-3,4-dihydro-3-oxo-2H-1,4-benzoxazin-6-yl]-2'-methyl-4'-(5-methyl-1,2,4-oxadiazol-3-yl)biphenyl-4-carboxamide

HRID 1292026Notes

Reaction equation

HRID 1292026 reaction equation
[CH3:1][C:2]1[CH:7]=[C:6]([C:8]2[N:12]=[C:11]([CH3:13])[O:10][N:9]=2)[CH:5]=[CH:4][C:3]=1[C:14]1[CH:19]=[CH:18][C:17]([C:20](O)=[O:21])=[CH:16][CH:15]=1.[NH2:23][C:24]1[CH:25]=[CH:26][C:27]2[O:32][CH2:31][C:30](=[O:33])[N:29]([CH2:34][CH2:35][N:36]([CH3:38])[CH3:37])[C:28]=2[CH:39]=1>S(Cl)(Cl)=O>[CH3:37][N:36]([CH3:38])[CH2:35][CH2:34][N:29]1[C:28]2[CH:39]=[C:24]([NH:23][C:20]([C:17]3[CH:18]=[CH:19][C:14]([C:3]4[CH:4]=[CH:5][C:6]([C:8]5[N:12]=[C:11]([CH3:13])[O:10][N:9]=5)=[CH:7][C:2]=4[CH3:1])=[CH:15][CH:16]=3)=[O:21])[CH:25]=[CH:26][C:27]=2[O:32][CH2:31][C:30]1=[O:33]

Participants

4

Reactant 2

HCID 111301684-[2-methyl-4-(5-methyl-1,2,4-oxadiazol-3-yl)phenyl]benzoic AcidHCID 189140886-amino-4-[2-(dimethylamino)ethyl]-3,4-dihydro-2H-1,4-benzoxazin-3-one

Product 1

HCID 18914075N-[4-(2-Dimethylaminoethyl)-3,4-dihydro-3-oxo-2H-1,4-benzoxazin-6-yl]-2'-methyl-4'-(5-methyl-1,2,4-oxadiazol-3-yl)biphenyl-4-carboxamideYield 75.4%

Reagents, catalysts & solvents 1

HCID 24386Thionyl ChlorideSolvent

Procedure

2'-Methyl-4'-(5-methyl-1,2,4-oxadiazol-3-yl)biphenyl-4-carboxylic acid (EP 0553268A1) (0.188 g, 0.64 mmol) was converted to the acyl chloride by stirring at reflux under Ar in thionyl chloride (10 ml) for 45 min, cooling, and then evaporating to dryness. This was reacted with 6-amino-4(2-dimethylaminoethyl)-1,4-benzoxazin-3(4H)-one (D8) (0.150 g, 0.64 mmol) following the procedure of Example 1. This gave the title compound (0.247 g, 75%) as a white foam, which was converted to the oxalate, a white solid.

Workup

  1. temperaturecooling
  2. customevaporating to dryness

Sources & evidence

ORD record
ord-02bc4bbb3d9f4161bd866fa710d4628b
Source dataset
uspto-grants-1998_05
Patent number
US05756496

Reaction notes

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