Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
Which reactions proceed by an SN1 mechanism? By an SN2 mechanism? Write the balanced equations.
By which mechanism (SN1 or SN2) did these reactions occur? How do you know? (Assume both react by the same mechanism).
For an SN2 reaction, the effect of solvent polarity is usually much less, but the ability (or really lack there of) of the solvent to solvate the nucleophile.
Complete the acid-base reaction below by writing the products of the reaction, and label the acid, and the conjugate base.
No spots were observed visually when the TLC plate was removed from the developing chamber. How might the student effect visualization of the spots?
Which one of the following best represents the flow of electrons in the key step for the aldol addition reaction that occurs when propanal is treated.
The banned pesticide DDT has been identified as the cause of thin egg shells produced by Peregrine falcons. What chemical process did DDT disrupt?
Describe with anisole as an example what are the major products obtained as a result of nitration of with HNO3+H2SO4.
What is the difference between polar protic solvent and polar aprotic solvents and how do they determine if a reaction is going to be Sn1, sn2, E1 or E2
Give the structures of all possible products when 2-chlorobutane reacts by the E-2 mechanism.
Draw a general mechanism that shows how these could be resolved into two free circles.
Naphtalene is soluble in diethyl ether, but it is insoluble in water regardless of the solution pH. Explain why this compound cannot be readily ionized.
In normal phase column chromatography, which solvent has more eluting power: petroleum ether or dicloromethane?
Explain why Grignard reagents cannot be prepared from an organic halide that also contains a hydroxyl, a carboxyl, a thiol, or amino group.
What product would each of the following Grignard reagents yield when treated with D2O?
How many signals from the CO ligands do you expect to see in the 13C NMR spectrum of each of these complexes? Explain.
Grignard reagents may be used to prepare other organometallic reagents, for example, ethylmagnesium bromide reacts with cadmium chloride.
"Crossed" or "mixed" aldol condensations are practical for synthesis, if one of the aldehydes (or ketones) has no alpha-hydrogen atoms. Explain.
What product(s) would you observe if you tried to prepare a Grignard reagent from 4-bromo-1-butanol?
Why in this work-up procedure is ordinary not anhydrous ether used for rinsing the reaction flask and to provide a satisfactory volume for extraction?
Provide three reasons for children’s high susceptibility to lead (Pb) toxicity, when compared with adults.
How might primary, secondary, and tertiary alcohols be prepared from a Grignard reagent and a suitable carbonyl-containing compound?
Draw out each of the following equations in a way that shows clearly the stereochemistry of the reactants and products.
Explain the difference in structure between a primary, secondary and tertiary alcohol (Alkanol).
How would you draw the condensed structural formula for the three following compounds?