Write a mechanism for the conversion of the aldol addition product, 3-hydroxy-3-(4-nitrophenyl)-1-(2-pyridyl)-1-propanone, to th
1 answer:
Solution :
"Aldol" stands for the abbreviation, aldehyde and alcohol. When a ketone or an aldehyde's enolate reacts with the carbonyl of a molecule at the alpha carbon, under the acidic or basic conditions so as to obtained the ketone or β-hydroxy aldehyde, is known as an aldol reaction.
For the conversion of the aldol addition product of a 3-hydroxy-3-(4-nitrophenyl)-1-(2-pyridyl)-1-propanone to an aldol condensation product of (E)-3-(4-nitrophenyl)-1-(2-pyridyl)-1-propenone, the mechanism is given in the diagram a below :
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Answer:
Answer: D
Explanation:
These all acids are very frequently used in the chemistry so try to remember all this kind of acid.
iodic acid is and HI is hydroiodic acid
The characteristics of the graphs we can find the answer on how to draw the graph
- Scales: The x scale = 40 mb / cm paper and the y scale = 0.05 mL / cm paper
- Graphic attached
The graphical representation is one of the best methods to visualize the relationships between a series of experimental data and to be able to find their functional relationships.
A graphic representation has several parts
- Find the scales.
- Mark the values on the x and y axis
- Plot the experimental points
- Draw the curve through the experimental points
The scales are found with the relationship between the variation of the data between the amount of paper or graph range, let's look for the scales for each axis.
x-axis
The variation of the data Δx = Final value - initial value
Paper range, generally it is x = 20cm (sheet size)
They indicate that the graph must start at zero, so the minimum value must be changed,
initial value = 0
Δx = 760 -0 = 760
x scale = 760/20
x scale = 38 mb / cm of paper
y-axis
Data range Δy= 0.9 -0
Paper range y= 20 cm (sheet size)
y-scale = 0.9 / 20
y scale = 0.045 mL / cm paper
One of the characteristics of the scale is that it must be comfortable for graphing, which is why it approximates the following units
Selected scales
x scale = 40 mb / cm paper
y scale = 0.05 mL / cm paper
The second part consists of marking values equally spaced and facilitating readable in the two axes, see attached for a graph made in a computer program
Plot each experimental point as best as possible, there are always some approximations by the selected scales
Draw a curve that passes through most of the experimental points and those that remain outside are balanced above and below the curve, in this case the program draws a line between each point, but it is preferable to draw a smooth curve.
In conclusion with the characteristics of the graphs we can find the answer on how to draw the graph
- x scale = 40 mb / cm paper
- y scale = 0.05 mL / cm paper
- Graphic attached
Learn more about graphical representation here:
