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CHEM266 Midterm: CHEM 266 Term Test 1 2014 answers

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copperwater-buffalo48

14 Oct 2015

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University of Waterloo

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Fall 2014: the structure of a testosterone derivative is shown below. 2) 2-fluorobutanal: methanol, dimethylether 5) diethylamine, nh4, 1, 3, 2, 4, 3, 5, 1, 2, 5, 1, 3, 5. Note: only charges are shown on the atoms, lone pairs of electrons are not: 2 only, 2 and 3, 1 and 4, 2 and 4, 2, 3 and 4, consider the resonance structures for the following molecule. Fall 2014: considering only the major resonance contributor of the following molecule, select the statement that is true: In the structure of the major resonance contributor, one of the atoms does not have a full octet: in the structure of the major resonance contributor, the overall formal charge of the molecule is zero. In the structure of the major resonance contributor there are five bonds: in the structure of the major resonance contributor a carbon atom and an oxygen atom both bear a negative charge. Fall 2014: consider the structure of (s)-3-methylhexane.

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Related Questions

1) The functional groups in an organic compound can frequently be deduced from its infrared absorption spectrum. A hydrocarbon exhibits no bands above 3000 but gives weak absorption at 2200 cm^-1.
Relative absorption intensity: (s)=strong, (m)=medium, (w)=weak.

What functional class(es) does the compound belong to?
List only classes for which evidence is given here. Attach no significance to evidence not cited explicitly.
Do not over-interpret exact absorption band positions. None of your inferences should depend on small differences like 10 to 20 cm^-1.

The functional class(es) of this compound is(are).(Enter letters from the table below, in any order, with no spaces or commas.)

a. alkane (List only if no other functional class applies.)

c. terminal alkyne

i. aldehyde or ketone

d. internal alkyne

j. carboxylic acid

g. ether

2) The functional groups in an organic compound can frequently be deduced from its infrared absorption spectrum. A compound containing C, H, and O exhibits strong, broad absorption band at 3430 cm^-1, a sharp band at 3300, and a band at 2200 cm^-1 (m).
Relative absorption intensity: (s)=strong, (m)=medium, (w)=weak.

What functional class(es) does the compound belong to?
List only classes for which evidence is given here. Attach no significance to evidence not cited explicitly.
Do not over-interpret exact absorption band positions. None of your inferences should depend on small differences like 10 to 20 cm^-1.

The functional class(es) of this compound is(are).(Enter letters from the table below, in any order, with no spaces or commas.)

a. alkane (List only if no other functional class applies.)

c. terminal alkyne

i. aldehyde or ketone

d. internal alkyne

j. carboxylic acid

g. ether

3) The functional groups in an organic compound can frequently be deduced from its infrared absorption spectrum. A C6 hydrocarbon exhibits bands between 3000-3100 (w), 2850-2960 (m), and at 1650 cm^-1 (w).
Relative absorption intensity: (s)=strong, (m)=medium, (w)=weak.

What functional class(es) does the compound belong to?
List only classes for which evidence is given here. Attach no significance to evidence not cited explicitly.
Do not over-interpret exact absorption band positions. None of your inferences should depend on small differences like 10 to 20 cm^-1.

The functional class(es) of this compound is(are).(Enter letters from the table below, in any order, with no spaces or commas.)

a. alkane (List only if no other functional class applies.)
b. alkene	h. amine
c. terminal alkyne	i. aldehyde or ketone
d. internal alkyne	j. carboxylic acid
e. arene	k. ester
f. alcohol	l. nitrile
g. ether

apricotspider15

1) The functional groups in an organic compound can frequently be deduced from its infrared absorption spectrum. A hydrocarbon exhibits no bands above 3000 but gives weak absorption at 2200 cm^-1.
Relative absorption intensity: (s)=strong, (m)=medium, (w)=weak.

What functional class(es) does the compound belong to?
List only classes for which evidence is given here. Attach no significance to evidence not cited explicitly.
Do not over-interpret exact absorption band positions. None of your inferences should depend on small differences like 10 to 20 cm^-1.

The functional class(es) of this compound is(are).(Enter letters from the table below, in any order, with no spaces or commas.)

a. alkane (List only if no other functional class applies.)

c. terminal alkyne

i. aldehyde or ketone

d. internal alkyne

j. carboxylic acid

g. ether

2) The functional groups in an organic compound can frequently be deduced from its infrared absorption spectrum. A compound containing C, H, and O exhibits strong, broad absorption band at 3430 cm^-1, a sharp band at 3300, and a band at 2200 cm^-1 (m).
Relative absorption intensity: (s)=strong, (m)=medium, (w)=weak.

What functional class(es) does the compound belong to?
List only classes for which evidence is given here. Attach no significance to evidence not cited explicitly.
Do not over-interpret exact absorption band positions. None of your inferences should depend on small differences like 10 to 20 cm^-1.

The functional class(es) of this compound is(are).(Enter letters from the table below, in any order, with no spaces or commas.)

a. alkane (List only if no other functional class applies.)

c. terminal alkyne

i. aldehyde or ketone

d. internal alkyne

j. carboxylic acid

g. ether

3) The functional groups in an organic compound can frequently be deduced from its infrared absorption spectrum. A C6 hydrocarbon exhibits bands between 3000-3100 (w), 2850-2960 (m), and at 1650 cm^-1 (w).
Relative absorption intensity: (s)=strong, (m)=medium, (w)=weak.

What functional class(es) does the compound belong to?
List only classes for which evidence is given here. Attach no significance to evidence not cited explicitly.
Do not over-interpret exact absorption band positions. None of your inferences should depend on small differences like 10 to 20 cm^-1.

The functional class(es) of this compound is(are).(Enter letters from the table below, in any order, with no spaces or commas.)

a. alkane (List only if no other functional class applies.)
b. alkene	h. amine
c. terminal alkyne	i. aldehyde or ketone
d. internal alkyne	j. carboxylic acid
e. arene	k. ester
f. alcohol	l. nitrile
g. ether

Q1/ Piperine and capsaicin are ingredients of pappers that given "hotness" to food. in figure(on link below) identify the nitrogen atoms shown in blue as belonging to an amine or an amide

http://foolsexperiments.files.wordpress.com/2011/10/piperine.png ..(piperine image)

http://commons.wikimedia.org/wiki/File:Capsaicin_chemical_structure.png ( capsaicin image)

a) draw the amine and carboxylic acid that could react to form these two compunds. Do not add a "+" sign between the amine and the carboxylic acid . ( draw for both piperine and capsaicin)

b) Are the double bonds in piperine and capsaicin cis or trans?

c) name the functional groups that contain the oxgen atoms in these comounds:( choose all matches for both)

piperine: capsaicin: (same as piperine lists )

alcohol

aldehyde

ketone

carboxylic acid

amide

ether

==============================

Q2/ In 2002, a new compound URB597, was reported to inhibit the hydrolysis of anandamide and thus prolong tha pain relief rovided by anandamide.

http://chinarclab.com/en/synthetic-cannabinoids/56-urb597.html (URB597 image)

a) Are there any chiral centers in URB597?

b) URB597 is the product of a condensation reaction between an alcohol and one other reactant. Draw the structures of two compunds that "+" sign between the molecules.

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