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PhF behaves rather differently from other halobenzene derivatives owing to the pi-donor properties of fluoride. For example, the para position is more activated than benzene toward electrophiles. For this reason, it can be converted to 1-bromo-4-fluorobenzene with relatively high efficiency. [3]
Aside from these effects, there is often also a steric effect, due to increased steric hindrance at the ortho position but not the para position, leading to a larger amount of the para product. The effect is illustrated for electrophilic aromatic substitutions with alkyl substituents of differing steric demand for electrophilic aromatic nitration.
Haloanilines Fluoroaniline; Chloroaniline; Bromoaniline; Iodoaniline; Haloanisoles Fluoroanisole; Chloroanisole; Bromoanisole; Iodoanisole; Halobenzaldehydes
Halobenzene derivatives (4 C, 1 P) Halobenzenes (5 C, 1 P) I. Iodobenzene compounds (2 C) This page was last edited on 1 February 2024, at 18:51 (UTC). Text is ...
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The Birch reduction is an organic reaction that is used to convert arenes to 1,4-cyclohexadienes.The reaction is named after the Australian chemist Arthur Birch and involves the organic reduction of aromatic rings in an amine solvent (traditionally liquid ammonia) with an alkali metal (traditionally sodium) and a proton source (traditionally an alcohol).
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The defending champions have suffered no ill effects of a Super Bowl hangover. The Chiefs are inching closer to clinching the AFC's No. 1 seed after defeating Houston 27-19.