4,7-Bis(5-broMothiophen-2-yl)-5,6-difluorobenzo[c][1,2,5] thiadiazole synthesis
- Product Name:4,7-Bis(5-broMothiophen-2-yl)-5,6-difluorobenzo[c][1,2,5] thiadiazole
- CAS Number:1304773-89-4
- Molecular formula:C14H4Br2F2N2S3
- Molecular Weight:494.19
![5,6-difluoro-4,7-di(thiophen-2-yl)benzo[c][1,2,5]thiadiazole](/CAS/20180703/GIF/1304773-88-3.gif)
1304773-88-3
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Yield: 84%
Reaction Conditions:
with N-Bromosuccinimide in 1,2-dichloro-benzene at 55; for 3 h;
Steps:
1.5
Step 5: Synthesis of 5,6-difluoro-4,7-di(5-bromo-2-thienyl)-2,1,3-benzothiadiazole5,6-difluoro-4,7-di(2-thienyl)-2,1 ,3-benzothiadiazole (1.07 g, 3.18 mmol), N- bromosuccinimide (1.132 g, 6.36 mmol) and o-dichloroenzene (20 ml) were stirred at 55°C for 3 h. Then o-dichlorobenzene was removed by vacuum distillation and the remaining solid was washed with ethanol and water before further purification by recrystallization from toluene (45 ml) to afford yellow crystals of 5,6-difluoro-4,7-di(5- bromo-2-thienyl)-2, 1 ,3-benzothiadiazole (Monomer 2) (1.32 g, 84%). H and 19F NMR spectra were as expected.
References:
NATIONAL RESEARCH COUNCIL OF CANADA;Ll, Zhao;DING, Jianfu;LU, Jianping;TAO, Ye WO2011/60526, 2011, A1 Location in patent:Page/Page column 9
![5,6-difluorobenzo[c][1,2,5]thiadiazole](/CAS/20150408/GIF/1293389-28-2.gif)
1293389-28-2
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![5,6-difluoro-4,7-diiodobenzo[c][1,2,5]thiadiazole](/CAS/20150408/GIF/1293389-29-3.gif)
1293389-29-3
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156682-52-9
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$9.00/1g
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1283598-32-2
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