Write the steps in the mechanism of the base catalyzed
condensation of the following reaction:
acetone...
Write the steps in the mechanism of the base catalyzed
condensation of the following reaction:
acetone + Benzaldehyde (2.0
equivalents) ---(NaOH, H2O, heat)---->
dibenzalacetone
a) The first step is the
deprotonation of acetone to form the reactive enolate nucleophile.
Draw a reasonable and detailed arrow pushing mechanism for the
following transformation.
b) Next, the reactive enolate
will react with the electrophile, benzaldehde. This will give the
addition product of the Aldol reaction. Draw a reasoable and
detailed arrow pushing mechanism...
In the synthesis of tetraphenlycyclopentadienone...
1.) During the intermolecular aldol reaction what is the
nucelophile?
a....
In the synthesis of tetraphenlycyclopentadienone...
1.) During the intermolecular aldol reaction what is the
nucelophile?
a. benzil
b. 1,3- dibenzyl ketone
c. KOH
d. Ethanol
2.) During the intermolecular aldol reaction what is the
electrophile?
a. benzil
b. 1,3- dibenzyl ketone
c. KOH
d. Ethanol
3.) The (a)_____________ is the parent molecule which acts as
the nucelophile , while (b) ________is the parent molecule that
acts as the elctrophile.
a. ethanol, potassium
b. tetraphenylcyclopentadienone, KOH
c. 1,3-dibenzyl ketone, benzil
d....
a. In rolling 3 fair dice, what is the probability of obtaining
a sum not greater...
a. In rolling 3 fair dice, what is the probability of obtaining
a sum not greater than 16?
b. In rolling 2 fair dice, what is the probability of a sum
greater than 3 but not exceeding 6?
c. If a box contains 10 left-handed and 20 right-handed screws,
what is the probability of obtaining at least one right-handed
screw in drawing 2 screws with replacement?
d. Will the probability in Prob. 5 increase or decrease if we
draw without...
Activities
Predecessors
Duration(weeks)
Labour
A
4
5
B
A
3
5
C
B
2
5
D...
Activities
Predecessors
Duration(weeks)
Labour
A
4
5
B
A
3
5
C
B
2
5
D
C
1
5
E
B
2
5
F
E
8
5
G
D
10
5
H
B
2
5
I
B
3
5
J
F,G,I
3
5
K
H
2
5
L
J,K
3
5
M
L
1
5
i.Construct an activity on the arrow network
ii. Determine the Duration of the Critical Path;
iii. Draw the corresponding Gantt chart
iv. Draw the resource...
QUESTION 17
If A = { 1, 2, 3, 4 } B = { 3, 4, 5...
QUESTION 17
If A = { 1, 2, 3, 4 } B = { 3, 4, 5
} C = { 5, 7, 8, 9 }
then A ∩ C U B equals
{ 3, 5 }
{ 3, 4, 5 }
{ 4, 5 }
None of the above
QUESTION 19
What is the Cartesian product A x B given A = {1, 2}
and B = {a, b}?
{ (1, a), (1, b), (2, a), (b, b) (a, a)}
{ (1, 1), (2, 2),...