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1,2-Dibromobenzene (o-dibromobenzene) is an aryl bromide and isomer of dibromobenzene. It is one of three isomers, the others being 1,3- and 1,4-dibromobenzene. It is a colorless liquid, although impure samples appear yellowish. The compound is a precursor to many 1,2-disubstituted derivatives of benzene.
Dibromobenzenes are a group of bromobenzenes with the formula C 6 H 4 Br 2, ... 1,2-Dibromobenzene: 1,3-Dibromobenzene [1] ... Boiling point: 225 °C 218–220 °C ...
Bromobenzenes are a group of aryl bromides/halobenzenes consisting of one or more bromine atoms as substituents on a benzene core. They have the formula C 6 H 6–n Br n, where n = 1–6 is the number of bromine atoms. Depending on the number of bromine substituents, there may be several constitutional isomers possible.
The possible screw axes are: 2 1, 3 1, 3 2, 4 1, 4 2, 4 3, 6 1, 6 2, 6 3, 6 4, and 6 5. Wherever there is both a rotation or screw axis n and a mirror or glide plane m along the same crystallographic direction, they are represented as a fraction n m {\textstyle {\frac {n}{m}}} or n/m .
1,4-Dibromobenzene (p-dibromobenzene) is an aryl bromide and isomer of dibromobenzene that is solid at room temperature. It has a strong smell similar to that of the lighter chlorine analogue. It can be used as a precursor to the dye 6,6-dibromoindigo. [4]
1,3-Dibromobenzene has been used as a starting material in the synthesis of antiviral Lufotrelvir, in human clinical trials for the treatment of COVID-19. [3] The first step is formylation of 1,3-dibromobenzene to 2,6-dibromobenzaldehyde, by lithiation with lithium diisopropylamide in THF, followed by quenching with dimethylformamide.
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1,2,4,5-Tetrabromobenzene is an aryl bromide and a four-substituted bromobenzene with the formula C 6 H 2 Br 4. It is one of three isomers of tetrabromobenzene. The compound is a white solid. 1,2,4,5-Tetrabromobenzene is an important metabolite of the flame retardant hexabromobenzene. [1]