Sodium Methoxide → (3-Bromo-5-iodophenyl)-thiourea
Reaktionsgleichung
C([NH:9][C:10]([NH:12][C:13]1[CH:18]=[C:17]([I:19])[CH:16]=[C:15]([Br:20])[CH:14]=1)=[S:11])(=O)C1C=CC=CC=1.C[O-].[Na+]>CO>[Br:20][C:15]1[CH:14]=[C:13]([NH:12][C:10]([NH2:9])=[S:11])[CH:18]=[C:17]([I:19])[CH:16]=1Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A stirred suspension of 1-Benzoyl-3-(3-bromo-5-iodophenyl)-thiourea (20.70 g, 0.0449 mol) in methanol (303 ml) was treated with sodium methoxide (2.42 g, 0.0449 mol) and stirred at ambient temperature for 4 h. The resultant suspension was evaporated to dryness at reduced pressure. The residue was mixed with water (500 ml) and extracted with ethyl acetate (3×200 ml) which was dried (MgSO4) and the solvent removed in vacuo to give a residue which was triturated with 40-60° petroleum ether/diethyl ether (1:1) to afford (3-Bromo-5-iodophenyl)-thiourea as an off-white solid (14.35 g, 89%).