N-bromobutanimide → Methyl (R)-6-(bromomethyl)-4-(2-chloro-4-fluorophenyl)-2-(thiazol-2-yl)-1,4-dihydropyrimidine-5-carboxylate

HRID 1778458Notes

Reaction equation

HRID 1778458 reaction equation
[CH3:1][O:2][C:3]([C:5]1[C@H:6]([C:17]2[CH:22]=[CH:21][C:20]([F:23])=[CH:19][C:18]=2[Cl:24])[N:7]=[C:8]([C:12]2[S:13][CH:14]=[CH:15][N:16]=2)[NH:9][C:10]=1[CH3:11])=[O:4].C1C(=O)N([Br:32])C(=O)C1>C(Cl)(Cl)(Cl)Cl>[CH3:1][O:2][C:3]([C:5]1[C@H:6]([C:17]2[CH:22]=[CH:21][C:20]([F:23])=[CH:19][C:18]=2[Cl:24])[N:7]=[C:8]([C:12]2[S:13][CH:14]=[CH:15][N:16]=2)[NH:9][C:10]=1[CH2:11][Br:32])=[O:4]

Participants

4

Reactant 2

HCID 67184N-bromobutanimideHCID 489278Methyl (R)-4-(2-Chloro-4-fluorophenyl)-6-methyl-2-(2-thiazolyl)-1,4-dihydropyrimidine-5-carboxylate

Product 1

HCID 89995948Methyl (R)-6-(bromomethyl)-4-(2-chloro-4-fluorophenyl)-2-(thiazol-2-yl)-1,4-dihydropyrimidine-5-carboxylate

Reagents, catalysts & solvents 1

HCID 5943Carbon TetrachlorideSolvent

Procedure

To a stirred solution of (R)-4-(2-chloro-4-fluoro-phenyl)-6-methyl-2-thiazol-2-yl-1,4-dihydro-pyrimidine-5-carboxylic acid methyl ester (0.37 g, 1.0 mmol) in CCl4 (5 mL) was added NBS (0.20 g, 1.1 mmol) in portions. After the reaction mixture was stirred at room temperature for 1 hour, the solvent was removed in vacuo and the residue was purified by column chromatography to give (R)-6-bromomethyl-4-(2-chloro-4-fluoro-phenyl)-2-thiazol-2-yl-1,4-dihydro-pyrimidine-5-carboxylic acid methyl ester (Compound C) as a yellow solid. MS: calc'd 445 (MH+), measured 445 (MH+).

Workup

  1. customthe solvent was removed in vacuo
  2. customthe residue was purified by column chromatography

Sources & evidence

ORD record
ord-931386354eea4e34b218ba918a43013a
Source dataset
uspto-grants-2016_02
Patent number
US09266904B2

Reaction notes

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