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Cumene (isopropylbenzene) is an organic compound that contains a benzene ring with an isopropyl substituent. It is a constituent of crude oil and refined fuels. It is ...
This latter cumene converts into cumene radical and feeds back into subsequent chain formations of cumene hydroperoxides. A pressure of 5 atm is used to ensure that the unstable peroxide is kept in liquid state. Cumene hydroperoxide undergoes a rearrangement reaction in an acidic medium (the Hock rearrangement) to give phenol and acetone. In ...
Diisopropylbenzenes typically arise by alkylation of benzene or isopropylbenzene with propylene: C 6 H 6 + CH 3 CH=CH 2 → C 6 H 5 CH(CH 3) 2 C 6 H 5 CH(CH 3) 2 + CH 3 CH=CH 2 → C 6 H 4 (CH(CH 3) 2) 2. These alkylations are catalyzed by various Lewis acids, such as aluminium trichloride. They can also be prepared and transformed by ...
Friedel–Crafts reactions have been used in the synthesis of several triarylmethane and xanthene dyes. [26] Examples are the synthesis of thymolphthalein (a pH indicator) from two equivalents of thymol and phthalic anhydride: A reaction of phthalic anhydride with resorcinol in the presence of zinc chloride gives the fluorophore fluorescein.
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n-Propylbenzene is an aromatic hydrocarbon with the formula C 6 H 5 CH 2 CH 2 CH 3.The molecule consists of a propyl group attached to a phenyl ring. It is a colorless liquid. A more common structural isomer of this compound is cumene.
Cumene (isopropylbenzene) Index of chemical compounds with the same name This set index article lists chemical compounds articles associated with the same name.
In addition to p-cymene, two less common geometric isomers are o-cymene, in which the alkyl groups are ortho-substituted, and m-cymene, in which they are meta-substituted.