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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?
Draw the structural formula for a triglyceride made from 3 molecules of decanoic acid.
Identify four different functional groups from among your structures. Circle and name them on the representative structures.
If 3-bromo-1-propanol is treated with NaOH, a compound of molecular formula C3H6O is formed. Suggest a structure for this product.
Steam distillation may be used to separate a mixture of p-nitrophenol and o-nitrophenol. The ortho isomer distills at 93 degrees Celsius, the para isomer.
An unknown compound containing C, H, and one kind of heteroatom only shows a molecular ion peak at m/z 184 and a peak of almost equal intensity.
Draw the most stable conformation of trans-1-isobutyl-4-methylcyclohexane in both the chair conformation and the wedge structure.