Which of the following is the least reactive toward electrophilic aromatic substitution
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C6H6 + CH3C(O)Cl = C6H5C(O)CH3 + HCl. This is an example of an electrophilic aromatic substitution reaction, with the product being a ketone. The AlCl3 serves as a catalyst, converting the acyl chloride into a stronger electrophile to encourage attack by the relatively weakly nucleophilic benzene.
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Dec 21,2020 - Test: Aromatic Electrophilic Substitution | 25 Questions MCQ Test has questions of Class 11 preparation. This test is Rated positive by 87% students preparing for Class 11.This MCQ test is related to Class 11 syllabus, prepared by Class 11 teachers.
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Sep 20, 2018 · In this fifth post on aromatic chemistry, I’m looking at the electrophilic substitution reactions of phenol with bromine water and nitric acid. I’m going to discuss the fact that phenol is more easily substituted than benzene and explain this difference illustrating it by looking at the reaction with bromine water and with nitric acid solution.
Mar 06, 2020 · 2. Toluene. This is because the -CH 3 group, being an activating group activates the benzene ring towards electrophilic substitution in toluene. Question 11. a) Write IUPAC names of the products obtained by addition reactions of HBr to hex-1-ene: i) In the absence of peroxide. ii) In the presence of peroxide. b) Howwill you convert: i) Benzene ... The ferrocene then is the nucleophile and the rest of the reaction is a standard electrophilic aromatic substitution leaving the formyl oxonium, which is quenched to the formyl on work-up. i think ...
Jul 29, 2017 · On a general note yes! Aniline it's extremely reactive when it is compared to benzene because of the NH2 presence. Even in the absence of a catalyst it activates The Ring towards the ortho and para aromatic electrophic substitution. (15 points) Although a nitro group makes an aromatic ring much less reactive towards electrophilic substitution, a nitro group makes phenol a much stronger acid. Explain why these effects are opposite, specifically including resonance forms for the conjugate base of phenol. These electrophilic substitution reactions follow second order kinetics. The extent of reaction is monitored by following the decrease in diffusion current at the rotating platinum cathode versus saturated calomel electrode (SCE). The diffusion current measured is a function of decaying concentration of Br 2 or NBS at various time intervals ...
Each of the compounds shown below the two aromatic ring, labelled as A and B, identify number of compounds in which ring B is more active than ring A for electrophilic aromatic substitution reaction. View Solution play_arrow Rank the following carboxylic acid derivatives in decreasing order (most to least) of reactivity towards nucleophilic substitution. A) I>IV>III>II B) II>III>IV>I C) I>III>II>IV D) III>IV>II>I E) IV>I>III>II. Answer: View Answer. 11) Arrange the following compounds in order of decreasing reactivity towards electrophilic aromatic substitution: A ...
16) This substituent deactivates the benzene ring towards electrophilic substitution but directs the incoming group chiefly to the ortho and para positions. c) -F 19) Which one of these molecules can be a reactant in a Friedel-Crafts reaction?
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House of the rising sun on piano Jan 10, 2020 · Nitrobenzene contains an electron-withdrawing nitro group directly bound to the phenyl ring, which serves to deactivate the aromatic ring towards electrophilic aromatic substitution. And of course, a lack of reactivity is required of a solvent in an organic reaction. Plastic electrical box wire clamps Ryobi 12v drill driver
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The electrophilic substitution reaction between benzene and nitric acid. The facts. Benzene is treated with a mixture of concentrated nitric acid and concentrated sulphuric acid at a temperature not exceeding 50°C. As temperature increases there is a greater chance of getting more than one nitro group, -NO 2, substituted onto the ring.
In the reaction, alkyl halides should be primary having the least steric hindrance. Hence, an alkyl halide is obtained from ethanol and alkoxide ion from 3-methylpentan-2-ol. Q11 : Which of the following is an appropriate set of reactants for the preparation of 1-methoxy-4-nitrobenzene and why?