Organic Chemistry
Organic Chemistry
5th Edition
ISBN: 9780078021558
Author: Janice Gorzynski Smith Dr.
Publisher: McGraw-Hill Education
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Chapter 10, Problem 10.43P
Interpretation Introduction

(a)

Interpretation: Each double bond in lejimalide B is to be labeled as E or Z.

Concept introduction: Stereochemistry is defined as the arrangement of molecule in three dimensional and its impact on chemical reactions.

The use of prefix E and Z depends upon the location of the higher priority groups. When two higher priority groups are present on the opposite side then it is an E isomer, whereas when two higher priority groups are present on the same side then it is an Z isomer. The priority order depends upon the atomic number of the elements.

Interpretation Introduction

(b)

Interpretation: Each tetrahedral stereogenic center in the given drug is to be labeled as R or S.

Concept introduction: Rules for assigning R and S configuration are as follows:

1. The groups are prioritized on the basis of their atomic numbers. Atom with highest atomic number is assigned the first position.

2. If the atoms that are attached to the chiral centre are similar to each other, then the priority is given on the basis of the next atom attached.

3. The molecule is oriented in such a manner that the lowest priority group comes at the dashed wedge.

4. If the first three high priority groups are present in a clockwise manner then the molecule is assigned R configuration but if these are present in an anticlockwise manner then the molecule is assigned with S configuration.

Interpretation Introduction

(c)

Interpretation: The number of stereoisomers possible for lejimalide B is to be predicted.

Concept introduction: A compound exhibits number of stereoisomers when it contains more than one stereogenic centers. The maximum number of stereoisomers a compound with n number of stereogenic centers can show is 2n. A carbon atom which is bonded to four different groups is termed as chiral center or stereogenic center. Two compounds which are non-superimposable mirror images of each other are known as enantiomers. A pair of diastereomers exists when two substituents attached to each of the double bonded carbon atoms are different.

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Chapter 10 Solutions

Organic Chemistry

Ch. 10 - Linolenic acidTable 10.2 and stearidonic acid are...Ch. 10 - Prob. 10.12PCh. 10 - Problem 10.13 What product is formed when each...Ch. 10 - Prob. 10.14PCh. 10 - Problem 10.15 Draw the products formed when each...Ch. 10 - Prob. 10.16PCh. 10 - Prob. 10.17PCh. 10 - Addition of HBr to which of the following alkenes...Ch. 10 - Problem 10.19 Draw the products, including...Ch. 10 - Prob. 10.20PCh. 10 - Problem 10.21 What two alkenes give rise to each...Ch. 10 - Prob. 10.22PCh. 10 - Problem 10.23 Draw the products of each reaction,...Ch. 10 - Problem 10.24 Draw all stereoisomers formed in...Ch. 10 - Prob. 10.25PCh. 10 - Problem 10.26 What alkylborane is formed from...Ch. 10 - Draw the products formed when each alkene is...Ch. 10 - What alkene can be used to prepare each alcohol as...Ch. 10 - Prob. 10.29PCh. 10 - Draw the products of each reaction using the two...Ch. 10 - Problem 10.31 Devise a synthesis of each compound...Ch. 10 - Give the IUPAC name for each compound. a.b.Ch. 10 - a Label the carbon-carbon double bond in A as E or...Ch. 10 - Prob. 10.34PCh. 10 - 10.35 Calculate the number of degrees of...Ch. 10 - Prob. 10.36PCh. 10 - Label the alkene in each drug as E or Z....Ch. 10 - Give the IUPAC name for each compound. a. c. e. b....Ch. 10 - Prob. 10.39PCh. 10 - 10.40 (a) Draw all possible stereoisomers of, and...Ch. 10 - Prob. 10.41PCh. 10 - 10.42 Now that you have learned how to name...Ch. 10 - Prob. 10.43PCh. 10 - Prob. 10.44PCh. 10 - Prob. 10.45PCh. 10 - Draw the products formed when (CH3)2C=CH2 is...Ch. 10 - What alkene can be used to prepare each alkyl...Ch. 10 - Prob. 10.48PCh. 10 - Draw the constitutional isomer formed in each...Ch. 10 - Prob. 10.50PCh. 10 - Draw all stereoisomers formed in each reaction. a....Ch. 10 - Draw the products of each reaction, including...Ch. 10 - Prob. 10.53PCh. 10 - Prob. 10.54PCh. 10 - Prob. 10.55PCh. 10 - 10.56 Draw a stepwise mechanism for the following...Ch. 10 - Prob. 10.57PCh. 10 - Draw a stepwise mechanism for the conversion of...Ch. 10 - Draw a stepwise mechanism that shows how all three...Ch. 10 - Less stable alkenes can be isomerized to more...Ch. 10 - Prob. 10.61PCh. 10 - Prob. 10.62PCh. 10 - Bromoetherification, the addition of the elements...Ch. 10 - Devise a synthesis of each product from the given...Ch. 10 - 10.65 Draw a synthesis of each compound from...Ch. 10 - 10.66 Explain why A is a stable compound but B is...Ch. 10 - Prob. 10.67PCh. 10 - Prob. 10.68PCh. 10 - 10.69 Lactones, cyclic esters such as compound A,...Ch. 10 - 10.70 Draw a stepwise mechanism for the following...Ch. 10 - 10.71 Like other electrophiles, carbocations add...Ch. 10 - 10.72 Draw a stepwise mechanism for the...
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