ORGANIC CHEM CONNECT ACCESS CARD
5th Edition
ISBN: 9781259977589
Author: SMITH
Publisher: INTER MCG
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Textbook Question
Chapter 17, Problem 17.6P
What is the structure of a compound of molecular formula
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A hydrocarbon, compound B, has molecular formula C6H6, and gave an NMR spectrum with two signals: delta 6.55 pm and delta 3.84 pm with peak ratio of 2:1. When warmed in pyridine for three hr, compound B quantitatively converts to benzene. Mild hydrogenation of B yielded another compound C with mass spectrum of m/z 82. Infrared spectrum showed no double bonds; NMR spectrum showed one broad peak at delta 2.34 ppm. With this information, address the following questions.
a) How many rings are in compound C?
b) How many rings are probably in B? How many double bonds are in B?
c) Can you suggest a structure for compounds B and C?
d) In the NMR spectrum of B, the up-field signal was a quintet, and the down field signal was a triplet. How must you account for these splitting patterns?
A compound used as a moth repellant has three molecular ion peaks at m/z = 146 (100%), 148 (65%) & 150 (10%) amu in its mass spectrum. A pair of smaller peaks are seen at m/z= 111 (34%) & 113 (11%). The infrared spectrum shows sharp absorption just above 3000 cm^-1 region, and also at 1480 cm^-1. The ^1 H nmr shows a single sharp signal at delta = 7.2 ppm, and the ^13 C nmr has two signals (delta = 133 & 130 ppm).
Which C8H10 compound gives the following 1H NMR spectrum?
A. 2
B. 3
C. 1
D. 4
Chapter 17 Solutions
ORGANIC CHEM CONNECT ACCESS CARD
Ch. 17 - Prob. 17.1PCh. 17 - Problem 17.2 What orbitals are used to form the...Ch. 17 - Problem-17.3. Give the IUPAC name for each...Ch. 17 - Prob. 17.4PCh. 17 - Problem-17.5 What is the structure of propofol,...Ch. 17 - Problem 17.6 What is the structure of a compound...Ch. 17 - Problem 17.7 How many NMR signals does each...Ch. 17 - Prob. 17.8PCh. 17 - Prob. 17.9PCh. 17 - Prob. 17.10P
Ch. 17 - Prob. 17.11PCh. 17 - Prob. 17.12PCh. 17 - Prob. 17.13PCh. 17 - Problem 17.14 Januvia, the trade name for...Ch. 17 - Prob. 17.15PCh. 17 - Problem 17.16 Rank the following compounds in...Ch. 17 - Problem 17.17 Draw the seven resonance structures...Ch. 17 - Prob. 17.18PCh. 17 - Prob. 17.19PCh. 17 - Prob. 17.20PCh. 17 - Prob. 17.21PCh. 17 - Problem 17.22 How many NMR signals does ...Ch. 17 - 17.23 Name each compound and state how many lines...Ch. 17 - Prob. 17.24PCh. 17 - Prob. 17.25PCh. 17 - Prob. 17.26PCh. 17 - 17.27 Give the IUPAC name for each compounds.
a....Ch. 17 - 17.28 Draw a structure corresponding to each...Ch. 17 - 17.29 a. Draw the 14 constitutional isomers of...Ch. 17 - Prob. 17.30PCh. 17 - Prob. 17.31PCh. 17 - Prob. 17.32PCh. 17 - 17.33 Label each compound as aromatic,...Ch. 17 - Prob. 17.34PCh. 17 - 17.35 Pentalene, azulene, and heptalene are...Ch. 17 - 17.36 The purine heterocycle occurs commonly in...Ch. 17 - Prob. 17.37PCh. 17 - 17.38
How many electrons does C contain?
How...Ch. 17 - Prob. 17.39PCh. 17 - 17.40 Explain the observed rate of reactivity of...Ch. 17 - 17.41 Draw a stepwise mechanism for the following...Ch. 17 - Prob. 17.42PCh. 17 - 17.43 Draw additional resonance structures for...Ch. 17 - Prob. 17.44PCh. 17 - Prob. 17.45PCh. 17 - 17.46 Which compound in each pair is the stronger...Ch. 17 - 17.47 Treatment of indene with forms its...Ch. 17 - Prob. 17.48PCh. 17 - 17.49 Draw the conjugate bases of pyrrole and...Ch. 17 - 17.50 a. Explain why protonation of pyrrole occurs...Ch. 17 - Prob. 17.51PCh. 17 - Prob. 17.52PCh. 17 - 17.53 How many signals does each compound...Ch. 17 - 17.54 Which of the diethylbenzene isomers (ortho,...Ch. 17 - 17.55 Propose a structure consistent with each...Ch. 17 - 17.56 Propose a structure consistent with each...Ch. 17 - 17.57 Thymol (molecular formula ) is the major...Ch. 17 - 17.58 You have a sample of a compound of molecular...Ch. 17 - 17.59 Explain why tetrahydrofuran has a higher...Ch. 17 - 17.60 Rizatriptan (trade name Maxalt) is a...Ch. 17 - 17.61 Zolpidem (trade name Ambien) promotes the...Ch. 17 - 17.62 Answer the following questions about...Ch. 17 - 17.63 Stanozolol is an anabolic steroid that...Ch. 17 - Prob. 17.64PCh. 17 - 17.65 Use the observed data to decide whether C...Ch. 17 - Prob. 17.66PCh. 17 - Prob. 17.67PCh. 17 - Prob. 17.68PCh. 17 - 17.69 Although benzene itself absorbs at in its ...
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