20 Questions
Which of the following is true about the reaction between aldehydes and Grignard reagents in ether solution?
Aldehydes give secondary alcohols
What is the product of the reaction between a ketone and a Grignard reagent in ether solution?
Tertiary alcohol
What is the intermediate formed in a Grignard reaction between an aldehyde or ketone and a Grignard reagent?
Alkoxide
Which of the following statements about carbonyl groups is true?
Carbonyl groups are electrophilic due to the polarity of the C-O bond.
What is the product of nucleophilic addition of an alcohol to a carbonyl group?
Hemiacetal
What happens in the presence of acid during the reaction of an alcohol with a carbonyl group?
Protonation of the OH group leads to an oxonium ion.
Which of the following is the correct mechanism for the formation of an enamine by reaction of an aldehyde or ketone with a secondary amine, R2NH?
Nucleophilic addition followed by proton transfer
Which of the following is the role of the secondary amine, R2NH, in the formation of an enamine?
It acts as a nucleophile
Which of the following functional groups is formed during the formation of an enamine?
Enamine
Which of the following is a possible product when an aldehyde or ketone reacts with a secondary amine, R2NH, to form an enamine?
Enamine
Which of the following is the equation of a line in slope-intercept form?
y = mx + b
Which of the following is the formula for the area of a circle?
A = pi r^2
Which of the following is the formula for the Pythagorean theorem?
a^2 + b^2 = c^2
Which of the following is the quadratic formula?
x = (-b +- sqrt(b^2 - 4ac))/(2a)
Which of the following is the formula for the volume of a rectangular prism?
V = lwh
Which of the following is the equation of a line in slope-intercept form?
$y = 2x + 3$
Which of the following is the formula for the area of a rectangle?
$A = lw$
Which of the following is the quadratic formula?
$x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$
Which of the following is the formula for the circumference of a circle?
$C = 2\pi r$
Which of the following is the formula for the volume of a sphere?
$V = \frac{4}{3}\pi r^3$
This quiz tests your knowledge of the formation of iminium ions and carbinolamines in nucleophilic addition reactions. It also covers the proton transfer and protonation steps involved in the conversion of carbinolamines.
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