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It may be shortened to QPE, from Quizalofop-P-Ethyl. [3] It is a Group 1 / A / A herbicide, used in Australia, [4] Morocco and Europe. [1] Affected weeds show symptoms after 7 to 10 days, the base and inter-veins become yellow; new growth joints are weak. After 16 days, tips become yellow or red and the plant falls apart. [4] In animal tests ...
The numbers are included in the name to avoid ambiguity about the position of the groups, and "tri" indicates that there are three identical methyl groups. If one of the methyl groups attached to the third carbon atom were instead an ethyl group, then the name would be 3-ethyl-2,3-dimethylpentane.
3-Ethylpentane (C 7 H 16) is a branched saturated hydrocarbon. It is an alkane, and one of the many structural isomers of heptane, consisting of a five carbon chain with a two carbon branch at the middle carbon. An example of an alcohol derived from 3-ethylpentane is the tertiary alcohol 3-ethylpentan-3-ol. [3]
It can be produced by a Friedel-Crafts alkylation between 1-chlorohexane and benzene., [1] or by the reaction of benzene and 1-hexene with various acid catalysts such as antimony pentafluoride, [2] scandium(III) triflate, [3] and phosphoric acid.
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It can also be prepared by combining ethylene, CO, and H 2. [4] When the reaction is catalyzed by dicobalt octacarbonyl, water can be used as a source of hydrogen.A proposed intermediate is the ethylene-propionyl species [CH 3 C(O)Co(CO) 3 (ethylene)] which undergoes a migratory insertion to form [CH 3 COCH 2 CH 2 Co(CO) 3].
2,3-pentadiene, H 3 C−CH=C=CH−CH 3, with two enantiomers (R and S). [ 5 ] Well known derivatives containing pentadiene groups include hexadienes , cyclopentadiene , and especially three fatty acids linoleic acid , α- linolenic acid , and arachidonic acid as well as their triglycerides (fats).
3-Ethylphenol is an organic compound with the formula C 2 H 5 C 6 H 4 OH. It is one of three isomeric ethylphenols. A colorless liquid, it occurs as an impurity in xylenols and as such is used in the production of commercial phenolic resins. [1]