Using Zaitsev's rule, choose the most stable alkene among the following. Draw out the structures of each of the options then select the correct answer. Recall that Zaitsev's Rule is about alkene stability. The trend for this is similar to the trend for carbocation stability. Either more or fewer groups on the alkene (and the carbocation) make it more stable. This question is wanting you to remember if it's more or fewer. A) 1,2-dimethylcyclohexene B) 1,6-dimethylcyclohexene C) cis-3,4-dimethylcyclohexene D) They are all of equal stability according to Zaitsev's rule. . Provide the major dehydration product of the following reaction. Recall which of the four substitution and elimination reactions a dehydration is. Before you do your SF or E# mechanism, remember what heteroatoms do in the presence of an acid (aka-the-OH is a bad leaving group, but protonating it might turn it into a good one). Don't forget to apply the concept from the previous question. OH H* A

Using Zaitsev's rule, choose the most stable alkene among the following. Draw out the structures of each of the options then select the correct answer. Recall that Zaitsev's Rule is about alkene stability. The trend for this is similar to the trend for carbocation stability. Either more or fewer groups on the alkene (and the carbocation) make it more stable. This question is wanting you to remember if it's more or fewer. A) 1,2-dimethylcyclohexene B) 1,6-dimethylcyclohexene C) cis-3,4-dimethylcyclohexene D) They are all of equal stability according to Zaitsev's rule. . Provide the major dehydration product of the following reaction. Recall which of the four substitution and elimination reactions a dehydration is. Before you do your SF or E# mechanism, remember what heteroatoms do in the presence of an acid (aka-the-OH is a bad leaving group, but protonating it might turn it into a good one). Don't forget to apply the concept from the previous question. OH H* A

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter13: Substitution

Section: Chapter Questions

Problem 2E

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Zaitsev's rule is useful in selecting which carbon adjacent to a carbocation will form the double bond in the alkene product. True or False
a) This alkene can be prepared via Wittig reaction. Draw structural formulas for the aldehyde and the Wittig reagent. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. • Draw the Wittig reagent in the ylide form. • If more than one combination of Wittig reagent and aldehyde is possible, draw only one set.
8. Using Zaitsev's rule, choose the most stable alkene among the following. Draw out the structures of each of the options then select the correct answer. Recall that Zaitsev's Rule is about alkene stability. The trend for this is similar to the trend for carbocation stability. Either more or fewer groups on the alkene (and the carbocation) make it more stable. This question is wanting you to remember if more or fewer. it's A) 1,2-dimethylcyclohexene B) 1,6-dimethylcyclohexene C) cis-3,4-dimethylcyclohexene D) They are all of equal stability according to Zaitsev's rule. hat
Determine the number of carbons present in the compound based on the base name. Draw the carbon chain and include any double or triple bonds if indicated in the suffix of the base name. Number each carbon. The carbons can be numbered from left to right or right to left. Draw any substituents on the corresponding carbon atom for which is indicated in the name. Refer to Figures 4 and 5 in the background for a visual representation of numbered carbons with corresponding substituents. Check that each carbon atom has a total of 4 bonds.
A benzene ring alters the reactivity of a neighboring group in the so-called “benzylic” position, similarly to how a double bond alters the reactivity of groups in the “allylic” position. Benzylic cations, anions, and radicals are all more stable than simple alkyl intermediates. a) Use resonance structures to show the delocalization of the positive charge, negative charge, and unpaired electron of the benzyl cation, anion, and radical.
a) This alkene can be prepared via Wittig reaction. Draw structural formulas for the aldehyde and the Wittig reagent. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. • Draw the Wittig reagent in the ylide form. • If more than one combination of Wittig reagent and aldehyde is possible, draw only one set. b) How would you convert the alkene to a epoxide? MCPBA c) How many chiral centers are present in the epoxide? V How many stereoisomers are possible in the epoxide that you formed in b)?
How many moles of Bra are required to completely halogenate the alkene?A. One moleB. Two molesC. Three molesD. Four moles What is the expected arrangement of the bromine atoms relative to each other amongthe carbon involved in pi bonding?A. anti-conformationB. syn-conformationC. trans-configurationD. cis-configuration What happens to bromine when it is adjacent to an alkene during a chemical reaction?A. Bromine becomes stable. (? kasi before brown siya/acidic tas naging colorless? Jk ewan)B. Bromine becomes polarized.C. Bromine becomes hybridized.D. Bromine becomes acidic. The relative arrangement of bromine atoms in the product is primarily due to:A. ElectronegativityB. RepulsionC. Hydrogen bondingD. Atomic weightWhat is your observation after the reaction?A. A yellow flame is produced.B. Bromine water decolorizes.C. The alkene becomes denser.D. A brown precipitate forms.
Markovnikov's rule can best be explained by considering * a) the number of hydrogen atoms attached to each of the double bond carbons atoms. b) the number of alkyl groups attached to each of the double bond carbons atoms. c) the relative stabilities of the carbocations that can be formed from the alkene. d) the spatial arrangement of the groups around the double bond. e) All of the above are good explanations for Markovnikov's rule.
Draw the structural formula for all the alkenes with the indicated molecular formula that, without undergoing a rearrangement, produce the compound shown as a major product. Br. C7H12 Br2/H₂O OH . You do not have to consider stereochemistry. • If more than one structure fits the description, draw them all. ⚫ Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. Separate structures with + signs from the drop-down menu. 0 ? F ChemDoodle Previous Next
Which of the products is correct for this reaction listed? Z-alkene, E-alkene, both, none?
Please answer this Can you give examples to explain Addition reactions-general characteristics Benzene rings do not reactthi like alkenes Remember, the electrophile adds to the less substituted carbon, and the nucleophile to the more substituted carbon. Markovnikov’s Rule: The addition of a hydrogen halide to an alkene favors the product in which the proton adds to the alkene carbon that is initially bonded to the greater number of hydrogen atoms. Carbocation rearrangements- Methyl groups and hydride groups can migrate to make a more stable carbocation. A primary carbocation is less stable than a secondary carbocation, which is less stable than a tertiary carbocation. Addition of A Strong Bronsted Acid Hydrohalogenation HX addition to an alkene. Goes through a carbocation intermediate. The electrophile (H+) adds to the less substituted carbon, and the carbocation forms on the more substituted carbon. The nucleophile (X-) then adds to the more substituted carbocation.…
Draw the major organic product(s) of the following reactions including stereochemistry when it is appropriate. H₂O/H₂SO4/Hg+2 CH3-CEC-CH3 • Use the wedge/hash bond tools to indicate stereochemistry where it exists. • If no reaction occurs, draw the organic starting material. Separate multiple products using the + sign from the drop-down menu.