19752-55-7, name is 1-Bromo-3,5-dichlorobenzene, belongs to chlorides-buliding-blocks compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. The chemical synthesis route is as follows. SDS of cas: 19752-55-7
3-(3,5-dichlorophenyl)pyridine Synthesised according to General Procedure 36. A mixture of 1-bromo-3,5-dichloro-benzene (424 mg, 1.88 mmol), 3-pyridineboronic acid pinacol ester (500 mg, 2.44 mmol), aqueous 2M Na2CO3 (1.96 mL, 3.93 mmol) and Pd(PPh3)4 (89 mg, 4 mol percent) in anhydrous toluene (18 mL) was stirred overnight at 80¡ã C. under nitrogen. The reaction was cooled down to room temperature, diluted with water (5 ml) and ethyl acetate (10 ml). The organic phase was separated, dried (Na2SO4), filtered and concentrated under reduced pressure to give a pale yellow oil, which was purified by silica-gel column chromatography to give 3-(3,5-dichlorophenyl)pyridine (481 mg, 74percent) as a white solid. 1H-NMR (400 MHz, CDCl3) delta 8.81 (d, J=2.1 Hz, 1H), 8.65 (dd, J=1.4, 4.8 Hz, 1H), 7.85-7.82 (m, 1H), 7.46 (d, J=1.8 Hz, 2H), 7.41-7.38 (m, 2H). LC/MS (10percent-99percent CH3CN (0.035percent TFA)/H2O (0.05percent TFA)), m/z: M+1 obs=224.3; tR=1.21 min.
The synthetic route of 19752-55-7 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; Stamos, Dean; Martinborough, Esther; Zimmermann, Nicole; Neubert, Timothy; Numa, Mehdi Michel Djamel; Whitney, Tara; Kawatkar, Aarti Sameer; US2009/131440; (2009); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics