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Made by: AYESHA AFTAB MALIKBs in bioinformaticsInternational Islamicuniversity IslamabadPakistan
Aromatic compounds: a hydrocarbon with alternating double an single bonds between carbon atoms containing one or more benzene rings that are characteristic of the benzene series of compounds.
Benzene and Aromatic Compounds Benzene (C6H6) is the simplest aromatic hydrocarbon (or arene). Benzene has four degrees of unsaturation, making it a highly unsaturated hydrocarbon. Whereas unsaturated hydrocarbons such as alkenes, alkynes and dienes readily undergo addition reactions, benzene does not. 6
History of aromatic compounds: August Wilhelm Hofmann in 1855 August Kekulé in 1865
J. J. Thomson, between 1897 and 1906 Sir Robert Robinson, in 1925
Friedel–Crafts alkylation involves the alkylation of an aromatic ring with an alkyl halide using a strong Lewis acid catalyst. With anhydrous ferric chloride as a catalyst, the alkyl group attaches at the former site of the chloride ion
any group derived from an alkane by the removal of one hydrogen atom. Alkyl groups are often designated by the symbol R.
. Acylation means substituting an acyl group into something - in this case, into a benzene ring. The most commonly used acyl group is CH3CO-. This is called the ethanoyl group
An acyl group is an alkyl group attached to a carbon-oxygen double bond. If "R" represents any alkyl group, then an acyl group has the formula RCO-
They consist of three or more benzene rings commonly produced by fossil fuel combustion. Also called polynuclear aromatic hydrocarbon.
Cigarettes Styrofoam(use mostly in food containers) Cumene (paint thinner, lacquer thinner, brush cleaner, paint stripper and spray paint) Benzene in Soft Drinks Gasoline
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this presentation include history chemical physical properties and uses of benzene..