(a)
Interpretation:
The two structures which represent the same compounds in the given set are to be stated.
Concept introduction:
Newmann projection is a way of representing the groups attached to carbon atoms in the
The line-and-wedge representation is used to show the molecule in three dimensions.
The sawhorse representation is used to show the above carbon atom on right side in a molecule.
(b)
Interpretation:
The two structures which represent the same compounds in the given set are to be stated.
Concept introduction:
The naming of the chemical compound is done using the parameters given by IUPAC. IUPAC stands for International Union of Pure and Applied Chemistry. This system of nomenclature is accepted worldwide. The IUPAC system provides the set of rules in order to do the naming of the chemical compounds.
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Organic Chemistry
- Take a look at the butane conformers below. Identify: (a)Which is an anti conformation in Newman? (b)Which is a Gauche conformation? (c)Which is the more stable Sawhorse conformer? (d)Which has the same potential energy/strain with ALS?arrow_forwardFor each of the following molecular formulas, determine the number of elements of unsaturation,and draw three examples.(a) C4H4Cl2 (b) C4H8Oarrow_forward(a) All Isomers have the same molecular formulae. Explain this further. Hint what does it mean to have the same molecular formulae? (b) What is Constitutional (structural) isomerism? Hint, isomers are different, so what is different between a pair of constitutional isomers (see the chart on the last page for examples). (c) What is Conformational isomerism?arrow_forward
- Which statements are true about constitutional isomers? (a) They have the same molecular formula. (b) They have the same molecular weight. (c) They have the same order of attachment of atoms. (d) They have the same physical propertiesarrow_forward(a) Draw a skeletal structure of the anabolic steroid methenolone from the following description. Methenolone contains the tetracyclic steroid skeleton with a carbonyl group at C3, a hydroxyl at C17, a double bond between C1 and C2, and methyl groups bonded to C1, C10, and C13. (b) Add wedges and dashed wedges for all stereogenic centers with thefollowing information: the configuration at C10 is R, the configuration at C13 is S, the configuration at C17 is S, and all substituents at ring fusions are trans to each other. (c) Draw the structure of Primobolan, the product formed when methenolone is treated with CH3(CH2)5COCl and pyridine. Primobolan is an anabolic steroid that can be taken orally or by injection and has been used illegally by well-known Major League Baseball players.arrow_forward(a) Draw the anti and gauche conformations for ethylene glycol (HOCH2CH2OH). (b) Ethyarrow_forward
- Explain why each of the following alkenes is stable or unstable.(a) 1,2-dimethylcyclopentene (b) trans-1,2-dimethylcyclopentene(c) trans-3,4-dimethylcyclopentene (d) trans-1,2-dimethylcyclodecenearrow_forwardConsider 1-bromopropane, CH3CH2CH2Br. (a) Draw a Newman projection for the conformation in which CH3 and -Br are anti (dihedral angle 180°). (b) Draw Newman projections for the conformations in which - CH3 and -Br are gauche (dihedral angles 60° and 300°). (c) Which of these is the lowest energy conformation? (d) Which of these conformations, if any, are related by reflection?arrow_forwardDrawn are four isomeric dimethylcyclopropanes. Would an equal mixture of compounds C and D be optically active?What about an equal mixture of B and C?arrow_forward
- HO₂ H COOH COOH V POH HOT COOH cooff VI Ho HO COOH COOH VI H H COOH COOH VIIL OH OH Question: In the structures / examples abovke Identify V, VI, VII and VIII as Identical enantiomers, ciastereomes, stereo/cumers and/or structural isomers (there are 6 pairs 7 Comp eand to discover te I&T I TEN TEM TIMIN).arrow_forwardWhich of the following is true about the carbon-carbon single bond in 1,3-butadiene when compared to the carbon-carbon single bond in ethane? (A) It is shorter than the carbon-carbon single bond of ethane. (B) The single bond in 1,3-butadiene has a higher %s character than in ethane The hydrogen atoms push the carbons closer using electrocyclic forces. Both A and B. (E) None of the above.arrow_forwardWrite each of the following condensed structural formulas as a bond-line formula (that is, using only lines and no elemental symbols). (a) CH3CH2CH2CH2CH3 (b) (CH3)2CHCH2CH3arrow_forward
- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning