Beta-Alanine → HCID 75038129, compound

HRID 409358Notes

Reaction equation

HRID 409358 reaction equation
[O:1]=[C:2]1[N:6]([CH:7]([CH2:11][C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)[C:8]([OH:10])=[O:9])[C:5](=[S:18])[NH:4][CH2:3]1.[Br:19][C:20]1[CH:25]=[CH:24][C:23]([C:26]2[S:30][C:29]([CH:31]=O)=[CH:28][CH:27]=2)=[CH:22][CH:21]=1.NCCC(O)=O.CO.C(Cl)Cl>C(O)(=O)C>[Br:19][C:20]1[CH:21]=[CH:22][C:23]([C:26]2[S:30][C:29]([CH:31]=[C:3]3[C:2](=[O:1])[N:6]([CH:7]([CH2:11][C:12]4[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=4)[C:8]([OH:10])=[O:9])[C:5](=[S:18])[NH:4]3)=[CH:28][CH:27]=2)=[CH:24][CH:25]=1

Participants

6

Reactant 4

HCID 239Beta-AlanineHCID 35780565-(4-bromophenyl)thiophene-2-carbaldehydeHCID 21226129Dichloromethane methanolHCID 57994057HCID 57994057, compound

Product 1

HCID 75038129HCID 75038129, compound

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

Conditions

Temperature
170 °C

Procedure

To a mixture of 2-(5-oxo-2-thioxoimidazolidin-1-yl)-3-phenylpropanoic acid (0.100 g, 0.378 mmol) and 5-(4-bromophenyl)thiophene-2-carbaldehyde (0.101 g, 0.378 mmol) in acetic acid 5 mL is added β-alanine (3.37 mg, 0.038 mmol) and heat to 170° C. for 30 min under microwave irradiation. The resulting reaction mixture is cooled down and the solvent is removed. The pure product (0.120 g, 0.234 mmol, red solid) is obtained by column chromatography using MeOH/DCM, 2-7% ration solvent system. 1H-NMR (CD3OD/300 MHz): 7.84 (m, 1H), 7.63 (m, 1H), 7.50 (m, 3H), 7.15 (m, 6H), 6.69 (s, 1H), 5.66 (dd, J=11.4, 5.1 Hz, 1H), 3.69 (dd, J=14.4, 12.0 Hz, 1H), 3.51 (dd, J=10.5, 5.1 Hz, 1H). MS (ES+, m/z): 511.3 (M−−1, 100.0).

Workup

  1. customThe resulting reaction mixture
  2. temperatureis cooled down
  3. customthe solvent is removed
  4. customThe pure product (0.120 g, 0.234 mmol, red solid) is obtained by column chromatography

Sources & evidence

ORD record
ord-563c2ae96a264e4888149bbd27db5d7d
Source dataset
uspto-grants-2014_06
Patent number
US08759384B2

Reaction notes

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