(a)
Interpretation:
The way by which given compound is synthesized from ethyne should be given.
Concept Introduction:
Lindlar catalyst: The catalyst is used for the hydrogenation of
Sodium in liquid ammonia: The catalyst is used for the formation of trans
Erythro isomer: In a Fischer Projection formula, if identical substituents are on the same side, then the isomer can be called as erythro.
Threo isomer: In a Fischer projection formula, if identical substituents are on the different side, then the isomer can be called as threo.
Meso compound: It is a symmetric compound which has the plane of symmetry. If there are two chirality centres and same set of four groups are attached on each chirality centre, then it can be called as meso compound.
(b)
Interpretation:
The way by which given compound is synthesized from ethyne should be given.
Concept Introduction:
Lindlar catalyst: The catalyst is used for the hydrogenation of alkynes in a syn manner. This means both hydrogen are added on the same side across the triple bond and the product obtained will be a cis product.
Sodium in liquid ammonia: The catalyst is used for the formation of trans alkenes from alkynes. Because of its more reactivity towards triple bonds, the reaction will stop at the formation of alkenes.
Erythro isomer: In a Fischer Projection formula, if identical substituents are on the same side, then the isomer can be called as erythro.
Threo isomer: In a Fischer Projection formula, if identical substituents are on the different side, then the isomer can be called as threo.
Meso compound: It is a symmetric compound which has the plane of symmetry. If there are two chirality centres and same set of four groups are attached on each chirality centre, then it can be called as meso compound.
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Chapter 7 Solutions
Organic Chemistry - MasteringChemistry
- Arrange the alkyl halides in order of increasing reactivity in an SN2 reaction with KI in acetone (least first). I, IV, III, II II, III, I, IV IV, I, III, II III, II, IV, Iarrow_forwardA mixture of 0.10 mol benzene and 0.10 mol p-xylene was allowed to react with 0.10 mol nitronium ion until all the nitronium ion was gone. Two products were obtained: 0.002 mol of one and 0.098 mol of the other. a. What was the major product? b. Why was more of one product obtained than of the other?arrow_forward2) Draw and name the organic compound found in every reaction. d) Reaction of cis-3,3-Dimethyl-4-propylocta-1,5-diene with two mole of HBr e) Reaction of trans-1-Bromo-3-chlorocyclopentane with potassium hydroxide f) Formation of Gilman reagent using isopropyl bromide g) Ozonolysis of 3,3-Dimethyloct-4-yne h) Complete halogenation (Cl2) of 3-Ethyl-5-methyl-1,6,8-decatriyne i) Partial hydrogenation using Lindlar's Catalyst 2,2,5,5-Tetramethylhex-3-yne j) Reaction of 3,4-Dimethylcyclodecyne with sodium amidearrow_forward
- Choose the best reagents from the list provided below for carrying out the following conversion. Match the reagent with the step number. HCl (aq), Zn(Hg) KMnO4, H3O+ CH3Cl, AlCl3 HNO3, H2SO4 Cl2, FeCl3 fuming sulfuric acidarrow_forwardWhich of the following reagent best accomplish this transformation below? a. Li/NH3 b. H2SO4, H2O, HgSO4 c. BH3, THF d. potassium permanganatearrow_forwardStarting with ethyne, describe how the following compounds can be synthesized: a. (3S,4R)- 4-bromo-3-hexanol and (3R,4S)- 4-bromo-3-hexanol b. (3R,4R)- 4-bromo-3-hexanol and (3S,4S)- 4-bromo-3-hexanolarrow_forward
- Determine the reagents A, B, C, D, E and the structure of compounds I, II, II in the reaction belowarrow_forwardWhat reagent(s) is needed to complete the transformation below? Options: BH3, then NaOH/H2O2 HBr with peroxides (ROOR) Br2 in H2O Br2 in HOCH3arrow_forwardPredict the major products of the following reactions.(a) 1@ethylcycloheptene + ozone, then (CH3)2S(b) 1@ethylcycloheptene + warm, concentrated KMnO4(c) 1@ethylcycloheptene + cold, dilute KMnO4arrow_forward
- Explain why the reaction of 2-bromopropane with NaOCOCH3 gives (CH3)2CHOCOCH3 exclusively as product, but the reaction of 2-bromopropane with NaOCH2CH3 gives a mixture of (CH3)2CH3 (20%) and CH3CH = CH2 (80%).arrow_forwardExplain the following with an example for each :(i) Kolbe’s reaction(ii) Reimer-Tiemann reaction(iii) Williamson ether synthesisarrow_forwardExplain why the reaction of 2-bromopropane with NaOCOCH3 gives(CH3)2CHOCOCH3 exclusively as product, but the reaction of 2-bromopropane with NaOCH2CH3 gives a mixture of (CH3)2CHOCH2CH3(20%) and CH3CH=CH2 (80%).arrow_forward
