Search results
Results from the WOW.Com Content Network
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]
Halobenzene may also refer to any of the monosubstituted halobenzenes: Fluorobenzene; Chlorobenzene; ... This page was last edited on 30 March 2024, at 22:29 (UTC).
The effects of electron correlation, beyond that of exchange energy resulting from the anti-symmetrization of the wavefunction, are completely neglected. For the great majority of systems under study, in particular for excited states and processes such as molecular dissociation reactions, the fourth item is by far the most important.
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).
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.
PHF 2: −65 −124 70 14984-74-8 Borane carbonyl: BH 3 CO ... −10 62 420-26-8 Pentafluoroethyl hypochlorite ... Numbers are boiling temperatures in °C.
For example, 2,4-dinitrochlorobenzene reacts in basic solution to give a phenol. Unlike in most other substitution reactions, fluoride is the best leaving group, and iodide the worst. [ 16 ] A 2018 paper indicates that this situation may actually be rather common, occurring in systems that were previously assumed to proceed via S N Ar mechanisms.
Pages in category "Halobenzene derivatives" This category contains only the following page. This list may not reflect recent changes. ...