Concept explainers
(a)
Interpretation: As a hybrid of five contributing structures the given molecule has to be drawn.
Concept Introduction:
Kekule structures:
The double bonds of an
The Kekule structure for benzene ring:
The back and forth shift of the double bonds in between these two forms is shown here:
(b)
Interpretation: As a hybrid of five contributing structures the given molecule has to be drawn.
Concept Introduction:
Kekule structures:
The double bonds of an aromatic ring shift back and forth very rapidly. The resulted forms or structures cannot be separated and stay in equilibrium. Those structures are known as Kekule structures.
The Kekule structure for benzene ring:
The back and forth shift of the double bonds in between these two forms is shown here:
(c)
Interpretation: As a hybrid of five contributing structures the given molecule has to be drawn.
Concept Introduction:
Kekule structures:
The double bonds of an aromatic ring shift back and forth very rapidly. The resulted forms or structures cannot be separated and stay in equilibrium. Those structures are known as Kekule structures.
The Kekule structure for benzene ring:
The back and forth shift of the double bonds in between these two forms is shown here:
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Organic Chemistry
- Compound A is an alcohol that undergoes oxidation to produce compound B.Compound B is a ketone that gives positive triiodomethane reaction. Compound B isthen reacted with phenyl magnesium bromide, C6H5MgBr in the presence of aqueousacid to form compound C. Compound C has the molecular formula of C9H12O. Deducethe structure for compound A, B and C. PLEASE PROVIDE CLEAR DRAWINGS AND EXPLANATIONSarrow_forward3. Cyclopropenones are described as having aromatic character. How would you account for this, given that the ring contains three π-electrons?arrow_forwardWhat is going on from compound B to compound C? Can you please select all the options that applyarrow_forward
- Compound F may be synthesised by the method attached: Draw the structural formulas of compounds A, C, D, E and F in the boxes providedarrow_forwardCompound A(C10H12O)gives off oxygen on treatment with sodium metal and also decolorizes Br2 in CCl4 to give organic compound B. Compound A on treatment with I2 in NaOH gives iodoform and salt C which after acidification gives a white solid D(C7H6O2). Using knowledge of organic chemistry identify structures A,B,C and Darrow_forwardWrite the structures of all the constitutionally isomeric ethers of molecular formula C5H12O, and give an acceptable name for each.arrow_forward
- Starting with acetylene and ethylene oxide as the only sources of carbon atoms, show how to prepare the compound Q.)Hexanedialarrow_forwardWrite chemical structures for compounds A through D in the following sequence of reac- tions. Compounds A and C are alcohols, one of which is cyclicarrow_forwardOn being heated with a solution of sodium ethoxide in ethanol, compound A (C7H15Br) yielded a mixture of two alkenes B and C, each having the molecular formula C7H14. Catalytic hydrogenation of the major isomer B or the minor isomer C gave only 3-ethylpentane. Suggest structures for compounds A, B, and C consistent with these observations.arrow_forward
- Give the reagents and conditions necessary for the following conversion. A to B, B to D, B to C, B to E, E to F, E to G, G to H, H to I. Hence deduce the name and structural formula of the compounds C and I. Compare the procedure for converting F and E to G.arrow_forwardAn organic compound A of unknown structure was found to have a molecular formula C8H16. When A was poured in water and heated, compound B having a molecular formula C8H18O was formed. B upon heating with sulfuric acid was converted to C as the major product which is identical to A. Ozonolysis of C gave one molecule each of two different products D and E, both having a molecular formula C4H8O. Write the reactions involved and determine the structure of A,B,C,D and E.arrow_forwardCompound D and compound E are in equilibrium. Write a stepwise mechanism from compound D to compound E showing ALL intermediates. Use curved arrows to symbolize the flow of electrons to show how each of the intermediates and product are formed. Show necessary lone pairs and all formal charges. Lastly explain which compound (D or E) will be in higher concentration.arrow_forward
- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning