LL ORG CHEM
6th Edition
ISBN: 9781264840083
Author: SMITH
Publisher: MCG
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Chapter 29, Problem 33P
Interpretation Introduction
Interpretation: The stepwise mechanism for the formation of flexibilene from diphosphate and isopentenyl diphosphate is to be drawn. The unusual about the cyclization that forms
Concept introduction: Terpenes are naturally occurring compounds that are present in plants and animals. Terpenes contain one or more isoprene units. Terpenoids are derivatives of terpenes with oxygen containing
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Part II. two unbranched ketone have molecular formulla (C8H100). El-ms showed that
both of them
have a molecular ion peak at m/2 =128. However ketone
(A) has a fragment peak at m/2 = 99 and 72
while ketone (B) snowed a
fragment peak at m/2 = 113 and 58.
9) Propose the most plausible structures for both ketones
b) Explain how you arrived at your conclusion by drawing the
Structures of the distinguishing fragments for each ketone,
including their fragmentation mechanisms.
Part V. Draw the structure of compound tecla using the IR spectrum Cobtained from
the compound in KBr pellet) and the mass spectrum as shown below.
The mass spectrum of compound Tesla showed strong mt peak at 71.
TRANSMITTANCE
LOD
Relative Intensity
100
MS-NW-1539
40
20
80
T
44
55
10
15
20
25
30
35
40
45
50
55
60
65
70
75
m/z
D
4000
3000
2000
1500
1000
500
HAVENUMBERI-11
Chapter 29 Solutions
LL ORG CHEM
Ch. 29.2 - Problem 31.1
One component of jojoba oil is a wax...Ch. 29.3 - Problem 31.2
How would you expect the melting...Ch. 29.3 - Problem 31.3
Draw the products formed when...Ch. 29.3 - Problem 31.4
The main fatty acid component of the...Ch. 29.3 - Prob. 5PCh. 29.7 - Problem 31.10
Locate the isoprene units in each...Ch. 29.7 - Problem 31.11
Locate the isoprene units in...Ch. 29.7 - Problem 31.12
Write a stepwise mechanism for the...Ch. 29.7 - Prob. 14PCh. 29.8 - Prob. 15P
Ch. 29.8 - Prob. 16PCh. 29.8 - Prob. 17PCh. 29 - 31.17 Locate the isoprene units in each...Ch. 29 - Prob. 25PCh. 29 - Locate the isoprene units in each compound. a. e....Ch. 29 - 31.27 Classify each terpene and terpenoid in...Ch. 29 - Prob. 33PCh. 29 - Draw three-dimensional structures f or each...Ch. 29 - Prob. 37PCh. 29 - Prob. 38PCh. 29 - Prob. 39PCh. 29 - Prob. 40PCh. 29 - 31.38 Draw the products formed when cholesterol is...Ch. 29 - 31.39 Draw a stepwise mechanism for the following...Ch. 29 - 31.40 Draw a stepwise mechanism for the following...Ch. 29 - Prob. 44P
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