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(a)
Interpretation:
The products formed by the reaction of
Concept introduction:
In oxymercuration-reduction reaction, the addition of water molecule to
(b)
Interpretation:
The compounds obtained after the reaction of the products of part (a) with
Concept introduction:
In oxymercuration-reduction reaction, the addition of water molecule to alkene takes place to form anti-addition products. The oxymercuration-reduction reaction follows the Markovnikov’s regioselectivity. The
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Chapter 7 Solutions
EBK ORGANIC CHEMISTRY
- (c) Arrange the following compounds in order of increasing acidity, and explain the reasons for your choice of order: phenol, cyclohexanol, 2-fluorocyclohexanol, 2-fluorophenol.arrow_forwardRank the compounds in each group in order of increasing reactivity in electrophilic aromatic substitution: (a) C6H6, C6H5Cl, C6H5CHO; (b) C6H5CH3, C6H5NH2, C6H5CH2NH2.arrow_forward(a) What is the major alkene formed when A is dehydrated with H2SO4? (b) What is the major alkene formed when A is treated with POCl3 and pyridine? Explain why the major product is different in these reactions.arrow_forward
- (a) Account for the following :(i) Electrophilic substitution reactions in haloarenes occur slowly.(ii) Haloalkanes, though polar, are insoluble in water.(b) Arrange the following compounds in increasing order of reactivity towards SN2 displacement:2-Bromo-2-Methylbutane, 1-Bromopentane, 2-Bromopentanearrow_forward(a) Account for the following :(i) Propanal is more reactive than propanone towards nucleophilic reagents.(ii) Electrophilic substitution in benzoic acid takes place at meta position.(iii) Carboxylic acids do not give characteristic reactions of carbonyl group.(b) Give simple chemical test to distinguish between the following pairs of compounds:(i) Acetophenone and benzaldehyde(ii) Benzoic acid and ethylbenzoate.arrow_forwardExplain why :(a) The dipole moment of chlorobenzene is lower than that of cyclohexyl chloride.(b) Alkyl halides, though polar, are immiscible with water.arrow_forward
- The endiandric acids comprise a group of unsaturated carboxylic acids isolated from a tree that grows in the rainforests of eastern Australia. The methyl esters of endiandric acids D and E have been prepared from polyene Y by a series of two successive electrocyclic reactions: thermal ring closure of the conjugated tetraene followed by ring closure of the resulting conjugated triene. (a) Draw the structures (including stereochemistry) of the methyl esters of endiandric acids D and E. (b) The methyl ester of endiandric acid E undergoes an intramolecular [4 + 2] cycloaddition to form the methyl ester of endiandric acid A. Propose a possible structure for endiandric acid A.arrow_forward7.44 Give the structures of two different alkyl bromides both of which yield the indicated alkene as the exclusive product of E2 elimination. (а) СH;CH—CH, (b) (CH3)2С—СH2 (c) BRCH=CB12 CH3 (d) CH3arrow_forwardGive reasons :(a) n-Butyl bromide has higher boiling point than f-butyl bromide.(b) Racemic mixture is optically inactive.(c) The presence of nitro group (-NO2) at o/p positions increases the reactivity of haloarenes towards nucleophilic substitution reactions.arrow_forward
- The endiandric acids comprise a group of unsaturated carboxylic acids isolated from a tree that grows in the rain forests of eastern Australia. The methyl esters of endiandric acids D and E have been prepared from polyene Y by a series of two successive electrocyclic reactions: thermal ring closure of the conjugated tetraene followed by ring closure of the resultingconjugated triene. (a) Draw the structures (including stereochemistry) of the methyl esters of endiandric acids D and E. (b) The methyl ester of endiandric acid E undergoes an intramolecular [4 + 2] cycloaddition to form the methyl ester of endiandric acid A. Propose a possible structure for endiandric acid A.arrow_forward2. (a) Reaction of an alkene with ozone followed by an oxidative workup gives the product shown. What is the structure of alkene A? A (b) Compounds B and C both have the formula C10H16. Hydrogenation of either compound over Pt gives the same product, cis-1-isopropyl-4-methylcyclohexane. Ozonolysis with reductive workup fragments the two compounds differently, as shown below. What are the structures of C B and C? (CHCl3, chloroform, is the solvent.) B 1) 03, CHCI 3 2) (CH3)2S 1) 03, CHC13 2) (CH3)2S H O 1) 03 2) H₂O2, H₂O H3C- H O CH3 3. (a) Draw the structures of all enols that would spontaneously form this ketone, including stereoisomers. + + I HO₂C H + La CH3CH₂-C-CH(CH3)2 O= (b) Would alkyne hydration be a good preparative method for this compound? If so, give the reaction. If not, explain why.arrow_forward(a) Write the chemical reaction involved in Wolff-Kishner reduction.(b) Arrange the following in the increasing order of their reactivity towards nucleophilic addition reaction:C6H5COCH3, CH3— CHO, CH3COCH3(c) Why carboxylic acid does not give reactions of carbonyl group?arrow_forward
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