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ethyl 5-broMo-2-iodobenzoate synthesis

3synthesis methods
21740-00-1 Synthesis
5-Bromo-2-iodobenzoic acid

21740-00-1
316 suppliers
$8.00/5g

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Yield:450412-27-8 100%

Reaction Conditions:

with oxalyl dichloride in dichloromethane at 40; for 0.5 h;

Steps:

17.1

Step 1 5-Bromo-2-iodo-benzoic acid ethyl ester; 5-Bromo-2-iodo-benzoic acid (25.Og, 76.47 mol) was dissolved in CH2Cl2 (75 ml) at room temperature. Oxalyl chloride (14.5 ml, 152.94 mmol) was added and the mixture was stirred at 4O0C for 30 minutes. The mixture was allowed to cool to room temperature and EtOH (6.69 ml, 114.71 mmol) was added. The mixture was concentrated under reduced pressure to give 27.2 g (quantitative) of 5-bromo-2-iodo-benzoic acid ethyl ester as a yellow crystalline solid.

References:

WO2008/55847,2008,A1 Location in patent:Page/Page column 86