(a)
Interpretation:
For the given organic structures IUPAC name should be identified.
Concept Introduction
Any organic molecule can be named by using certain rules given by IUPAC (International Union for Pure and applied chemistry). IUPAC name consists of three parts in major namely Prefix suffix and root word.
Prefix represents the substituent present in the molecule and its position in the root name.
Suffix denotes the presence of
For
Root word represents the longest continuous carbon skeleton of the organic molecule.
When a molecule consists of cyclic structure, the root word of the molecule is prefixed with cyclo, if it is two cyclic structure combined then prefixed with bicyclo.
Two stereoisomers are there for an alkene molecule. It depends upon the location of bulky group (or high molecular weight) on the double bonded carbon atoms. If the bulky groups are in same side then it is cis-isomer. If the bulky groups are in opposite side then it is trans-isomer.
(a)
Answer to Problem 50PP
The systematic name for the molecule (a) is trans-3,4,5,5-tetramethyl-3-heptene.
Explanation of Solution
To identify: The systematic name for the given structure (a).
Draw the given molecule (a) and find the longest parent carbon chain or carbon skeleton and the substituents for naming the compound.
trans-3,4,5,5-tetramethyl-3-heptene
The given molecule is drawn. The parent carbon skeleton is the longest continuous carbon chain that should contain more number of carbons. In the given molecule the parent carbon skeleton is the chain which contains 7 carbons. Hence the root name of the molecule is hept. Since it is an alkene with 7 carbons then heptene will be the parent carbon chain name.
The substituents present in the molecule are methyl groups on 3, 4 and 5. Therefore on numbering the three methyl groups are present at 3, 4 and 5, 5 positions is 3, 4, 5, 5-tetramethyl.
The bulky groups attached on the opposite sides of double bonded carbon atoms, so the given alkene molecule is ‘trans’.
Hence the systematic name for the molecule (a) is trans-3, 4, 5, 5-tetramethyl-3-heptene.
(b)
Interpretation:
For the given organic structures IUPAC name should be identified.
Concept Introduction
Any organic molecule can be named by using certain rules given by IUPAC (International Union for Pure and applied chemistry). IUPAC name consists of three parts in major namely Prefix suffix and root word.
Prefix represents the substituent present in the molecule and its position in the root name.
Suffix denotes the presence of functional group if any in the molecule. It can be an alkene, alkyne, alcohol, carboxylic acid, alcohol etc...
For alkenes, suffix will be ‘ene’.
Root word represents the longest continuous carbon skeleton of the organic molecule.
When a molecule consists of cyclic structure, the root word of the molecule is prefixed with cyclo, if it is two cyclic structure combined then prefixed with bicyclo.
Two stereoisomers are there for an alkene molecule. It depends upon the location of bulky group (or high molecular weight) on the double bonded carbon atoms. If the bulky groups are in same side then it is cis-isomer. If the bulky groups are in opposite side then it is trans-isomer.
(b)
Answer to Problem 50PP
The systemic name for the molecule (b) is 1-ethylcyclohexene.
Explanation of Solution
To identify: The systematic name for the given structure (b).
Draw the given molecule (b) and find the longest parent carbon chain or carbon skeleton and the substituents.
1-ethylcyclohexene
The given molecule is drawn. The parent carbon skeleton is the longest continuous carbon chain that should contain more number of carbons. In the given molecule the parent carbon skeleton is cyclic in nature which consists of 6 carbons so the root word for the molecule is cyclohexane. The suffix ‘ene’ is used since it is an alkene.
The substituent present in the molecule are 1 ethyl group. Therefore it named as 1-ethyl in suffix.
Hence the systematic name for the molecule (b) is 1-ethylcyclohexene.
(c)
Interpretation:
For the given organic structures IUPAC name should be identified.
Concept Introduction
Any organic molecule can be named by using certain rules given by IUPAC (International Union for Pure and applied chemistry). IUPAC name consists of three parts in major namely Prefix suffix and root word.
Prefix represents the substituent present in the molecule and its position in the root name.
Suffix denotes the presence of functional group if any in the molecule. It can be an alkene, alkyne, alcohol, carboxylic acid, alcohol etc...
For alkenes, suffix will be ‘ene’.
Root word represents the longest continuous carbon skeleton of the organic molecule.
When a molecule consists of cyclic structure, the root word of the molecule is prefixed with cyclo, if it is two cyclic structure combined then prefixed with bicyclo.
Two stereoisomers are there for an alkene molecule. It depends upon the location of bulky group (or high molecular weight) on the double bonded carbon atoms. If the bulky groups are in same side then it is cis-isomer. If the bulky groups are in opposite side then it is trans-isomer.
(c)
Answer to Problem 50PP
The systematic name for molecule (c) is 2–methyl bicyclo [2 2 2] oct-2-ene.
Explanation of Solution
To identify: The systematic name for the given structure (c).
Draw the given molecule (d) and find the longest parent carbon chain or carbon skeleton and the substituents.
2–methylbicyclo [2 2 2] oct-2-ene
The given molecule is drawn. The parent carbon skeleton is the longest continuous carbon chain that should contain more number of carbons. In the given molecule the parent carbon skeleton is bicyclic in nature which consists of 8 carbons so the root word for the molecule is bicyclooctane. The suffix ‘ene’ is used since it is an alkene.
The given molecule is bicyclo fused alkene, number of carbons at the bridge and bridge head is counted and it is found that there are 2 carbons each at bridge head and 2 carbons at bridge.
The substituents present in the molecule are 1 methyl group. Therefore it named as 1-methyl in suffix.
Hence the systematic name for the molecule (c) is 2–methylbicyclo [2 2 2] oct-2-ene.
The systematic name for the given molecule is given by using the IUPAC rules.
Want to see more full solutions like this?
Chapter 8 Solutions
Organic Chemistry
- Show work.....don't give Ai generated solutionarrow_forwardShow work. Don't give Ai generated solutionarrow_forward10. Complete the following halogenation reactions for alkanes. Draw the structures of one of the many possible products for each reaction. Name the reactant and product. a) CH₂- CH-CH2-CH3 + Br₂ CH₂ UV UV b) + Cl2 c) CH3-CH₂ CHICHCHICH-CH CH₂-CH₂ + F2 UVarrow_forward
- Which of the following processes involves the largest photon energy? Group of answer choices Electron promotion from n=2 to n=5 Electron relaxing from n=4 to n=3 Ionization of an electron from n=2 Ionization of an electron from n=4arrow_forwardWhich of the following compounds does not match atomic ratio expectations in Mendeleev's 1872 periodic table? Group of answer choices NO2 Al2O3 SO3 CaOarrow_forwardNeed help with 14 and 15. 14. bromobenzene + (CHs),CuLi + THF / -78° followed by water quench is a. toluene else!! b. xylene c. cumene d. styrene e. something 15. When cumene + H,SO, / Na,Cr, 0,/water are mixed (refluxed) what is produced? a. 2-phenylpropanol phenol e. styrene b. benzoic acid c. no reaction!arrow_forward
- Which of the following orbitals intersect or overlap the x-axis in the standard cartesian coordinate system used? (Select ALL correct answers.) Group of answer choices px dxz dx2-y2 py dxy sarrow_forwardWhich of the following sets of elements is not a Dobereiner triad? (Choose the best answer.) Group of answer choices Li-Na-K Al-Ga-In Cr-Mo-W K-Rb-Csarrow_forwardDon't used Ai solution and don't used hand raitingarrow_forward
- Don't used hand raiting and don't used Ai solutionarrow_forwardGive the structure(s) of the product(s) the reaction below, and be sure to indicate any relative stereochemistry (you can assume that each of the Diels-Alder reactions will proceed with endo selectivity). Draw out relevant enantiomer(s) if they are expected to form. If no reaction is expected to occur under the indicated conditions, then write "no reaction" or NR, and explain why you would expect nothing to occur. If more than one product is formed, please indicate which one will be the major product or if they will be formed in equal amounts. In all cases, equimolar amounts of both components/reagents are present unless indicated otherwise I'm struggling to see how this reaction will go! I am wondering if it will cycle on itself but I'm not sure how I drew out a decagon but I'm a bit lostarrow_forwardGive the structure(s) of the product(s) for the reactions below, and be sure to indicate any relative stereochemistry (you can assume that each of the Diels-Alder reactions will proceed with endo selectivity). Draw out relevant enantiomer(s) if they are expected to form. If no reaction is expected to occur under the indicated conditions, then write "no reaction" or NR, and explain why you would expect nothing to occur. If more than one product is formed, please indicate which one will be the major product or if they will be formed in equal amounts. In all cases, equimolar amounts of both components/reagents are present unless indicated otherwise .arrow_forward
ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
ChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill Education
Principles of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill Education
Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage Learning
Elementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY