Organic Chemistry
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Determine the product obtained when the given molecule is reacted with H 2 over Pd-C. Make sure to mention the relative stereochemistry. Any racemic mixtures should be shown by drawing both enantiomers.
Chemists use deuterium to understand the details of reaction mechanisms better because deuterium behaves like hydrogen in chemical reactions but is detected differently. Deuterium is added by replacing H2 with D2 in the hydrogenation reaction. Determine the expected product of the reaction between the given alkene and D2.
Explain why it is not possible to synthesize trans-1,2-diethylcyclohexane using the hydrogenation of 1,2-diethylcyclohex-1-ene.
Which would have a higher heat of hydrogenation per alkene?
What is (are) the product(s) formed when the given alkene undergoes a Pd/C-catalyzed reaction with H 2?
Determine the product(s) formed when the given compound is subjected to a Pd/C-catalyzed reaction with D 2.
What is(are) the product(s) formed when the given alkene compound undergoes a Pd/C-catalyzed reaction with H2?
Determine the product(s) formed when the given alkene compound undergoes Pd/C-catalyzed reaction with D 2.
Determine the necessary reagent(s) for the given reaction.
Draw the structures of the products formed in the reaction of 1-ethylcyclopent-1-ene with the following reagents. Include stereochemistry where appropriate.
Draw the products obtained from the following reaction. Include stereochemistry where appropriate.
Identify the stereoisomer of 2,3-dibromobut-2-ene which produces (2S,3S)-2,3-dibromobutane and (2R,3R)-2,3-dibromobutane upon hydrogenation using H2 with palladium over carbon.
For each of the following reactions, determine the major products. Include stereochemistry in your answer.(i) pent-1-ene + H2/Pt(ii) cis-pent-2-ene + H2/Ni
For each of the following reactions, determine the major products. Include stereochemistry in your answer.
For the following reaction, give the structures of the major products and propose the structures of any intermediates. Make sure you include stereochemistry in your answer.
Draw the product when partial hydrogenation (H2, Pd) is performed on the molecule arachidonic acid.
The hydrogenation reaction using the chiral catalyst (R)-BINAP(COD)RhOTf is shown below. Draw the product if (S)-BINAP(COD)RhOTf were used instead.
Determine the products that will form in the following reaction conditions.
Consider the alkene shown below:
Draw the product(s) that will form when it reacts with the following:
(i) I2
(ii) Br2
Consider the following alkene:
Give the products that will form when it reacts with the following reagents: (i) H2, Ni, and (ii) D2, Ni.
Provide the products that will form when the following alkene reacts with (i) H2, Ni, and (ii) D2, Ni.
Provide the compound with the molecular formula C7H12 that will react with only 1 equiv. of H2, Pd/C to produce a meso compound.
Using a cycloalkene and other suitable reagents, synthesize the following cycloalkane:
Given the reaction below, answer the following questions:
(i) What are the stereoisomers formed?
(ii) Are the stereoisomers enantiomers or diastereomers?
(iii) Which stereoisomer is greater in yield?
Determine the product of the reaction below. Is this reduction or oxidation?
Provide the product(s) of the following reaction. [Note: Show stereochemistry if applicable.]
1,2-dideuteriocyclopentene + H2, Pd/C
What are the products of the reactions below? Show stereochemistry if applicable.
(i) (Z)-4,5-dimethyloct-4-ene + H2, Pd/C
(ii) (E)-4,5-dimethyloct-4-ene + H2, Pd/C
Determine the number of alkenes that can be hydrogenated to form the following: (i) hexane and (ii) 4-methylheptane.
Determine all the possible alkenes required to produce heptane via hydrogenation.
Give the products formed in the reaction below. Indicate which stereoisomers are formed if applicable.
(Z)-4,5-diethylnon-4-ene + H2/Pt
Determine the stereoisomers obtained from the reactions below.
The reaction of C9H16 with H2 and a platinum catalyst yields an alkane with the molecular formula of C9H18. What can you say about the structure of C9H16 based on the described reaction?
Enzymatic reactions are very stereoselective. When 2-butanone is reduced using an enzyme and NADPH, the obtained product is optically active. The optical activity is not a result of impurities in the product such as the remaining enzyme or NADPH.
If the reduction of 2-butanone could be accomplished using catalytic hydrogenation, would the product be optically active?
Retrosynthetic analysis is a process that is the reverse of designing the synthesis of a novel compound, which usually takes a multistep process. Using only a one-step retrosynthesis, propose an alkene and the reagents needed to produce the desired product. (Note: the alkene should not undergo rearrangement.)
Determine the major products of the reactions given below, and include stereochemistry if applicable.
How can the following transformation be achieved? You can use any reagents as required.