Lateral substituted phenyl biphenylcarboxylates – non-chiral analogues of ferroelectric liquid crystals was written by Cigl, Martin;Jurok, Radek;Hampl, Frantisek;Svoboda, Jiri;Podoliak, Natalia;Novotna, Vladimira. And the article was included in Liquid Crystals in 2020.Safety of Methyl 4-bromo-2-fluorobenzoate This article mentions the following:
In this study mesomorphic properties of non-chiral liquid crystalline mols. and study the effect of lateral halogen (fluoro, chloro) substitution in the mol. core and the length of terminal chains was reported. This study prepared nine homolog series with the mol. core substituted at different positions with respect to the ester linkage group. Addnl., this study modified the length of both terminal alkyl chains (hexyl, octyl, decyl and dodecyl) sym. for both terminal chains. The effects of the lateral substitution and the chain length were analyzed with respect of the possibility to reduce the transition temperatures and tune the properties of presented liquid crystalline mols. In the experiment, the researchers used many compounds, for example, Methyl 4-bromo-2-fluorobenzoate (cas: 179232-29-2Safety of Methyl 4-bromo-2-fluorobenzoate).
Methyl 4-bromo-2-fluorobenzoate (cas: 179232-29-2) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbon–bromine bond is electrophilic in nature. The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. For many applications, organobromides represent a compromise of reactivity and cost.Safety of Methyl 4-bromo-2-fluorobenzoate
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary