1,3-Dibromo-5-iodobenzene
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1,3-Dibromo-5-iodobenzene
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CAS No:
19752-57-9
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Formula:
C6H3Br2I
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Chemical Name:
1,3-Dibromo-5-iodobenzene
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Synonyms:
Benzene,1,3-dibromo-5-iodo-;1,3-Dibromo-5-iodobenzene;3,5-Dibromoiodobenzene;3,5-Dibromophenyl iodide;1-Iodo-3,5-dibromobenzene
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CAS No:
Characteristics
0
4
2.514±0.06 g/cm3 (20 ºC 760 Torr)
122.5-123.5 °C @ Solvent: Water, Acetic acid
302.7±32.0 °C(Predicted)
136.9±25.1 °C
1.683
0.002mmHg at 25°C
Safety Information
P264, P280, P302+P352, P305+P351+P338, P321, P332+P313, P337+P313, P362
H315
|Warning|H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]|P264, P280, P302+P352, P305+P351+P338, P321, P332+P313, P337+P313, and P362|The GHS information provided by 1 company from 1 notification to the ECHA C&L Inventory.
1,3-Dibromo-5-iodobenzene Use and Manufacturing
Preparation of 3, 5-dibromo iodobenzene products: Add 2, 6-dibromo-4-iodoaniline and hypophosphorous acid, at room temperature, 60 ml of sodium nitrite solution in a container.When no starting material by HPLC, the reaction was stopped.Direct filtration can be crude, the crude product was recrystallized from ethanol, to obtain the product as white needles.Detail of the product of step dibromo-3, 5-iodobenzene was prepared as follows: wherein, charge amounts are as follows: 2, 6-dibromo-4-iodoaniline: 188.4 g of, sodium nitrite: 34.5 g of, hypophosphite: 600 g of, ethanol: 700ml.In the reaction flask 1000ml 166.1g2, 6- dibromo-4-iodo-aniline (0.5mol) and 600g of hypophosphorous acid, stirred for 10 minutes, and dispersed uniformly.Then dropping 34.5g sodium nitrite and 100ml water solution, violent exothermic reaction, the reaction temperature controlled water bath at 20-25 , about three hours after dropping, completion of the addition will be a lot of white solid precipitated.And then reacted at this temperature for 1 hour.The reaction was monitored by HPLC, when the raw material disappeared, the reaction was stopped, 20-25 filtered crude, the crude product was added to three 1000ml bottle, then add 700ml of absolute ethanol was heated to reflux (80 ) determined after the whole solution, cooling to 20-25 , filtered, and dried under reduced pressure to 60 deg.] C to give white needles 136g.As shown in Table 2 and 3, 5-dibromo-2-iodobenzene shown HPLC plot, 3, 5-dibromo iodobenzene map display content of 99.72 percent, 75.2 percent yield of the reaction.
Computed Properties
Molecular Weight:361.80
XLogP3:4
Exact Mass:361.76257
Monoisotopic Mass:359.76462
Heavy Atom Count:9
Complexity:87.1
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes
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