a. How many vinylic hydrogens does cyclopentene have? b. How many allylic hydrogens does it have?

Q: What alkene would you start with if you wanted to synthesizea. pentane? b. ethylcyclopentane?

A: The method of hydrogenation can also be used to make alkane both from alkene and alkynes.…

Q: What alkane is needed to make each attached alkyl halide by radicalhalogenation?

A: The given alkyl halides are represented as follows:

Q: (a) (b) Нeat Ethene

A: (a) The [4+2] cycloaddition reaction taking place between diene and dienophile from HOMO of a diene…

Q: Explain why compound A is much more stable than compound B. A B

A: Aromatic molecules are cyclic conjugated system with (4n+2) pi electrons. They are planar compounds.…

Q: Draw a second resonance structure for each carbocation. Then draw the hybrid.

A: In the below steps , please find the Resonating structure & hybrid

Q: Which alkene in each pair is more stable?

A: Stability of alkene: Trans alken is more stable than cis alkene. More substituted alkene is more…

Q: Which alkene in each pair is more stable?

A: In a chemical reaction; the substance which involves in conversion is said to be reactant whereas…

Q: b. d. Note: Ph -phenyl NHCH,CH3 Ph-N-CH,CH3 CH2CH3 ČH3

A: ◆ The longest continuous carbon chain includes the carbon attached to -NH2 group. ◆ Amines are named…

Q: With this in mind, draw the product of each intramolecular Diels-Alder reaction. ÇOOCH, a. b.

A: The reaction between conjugated diene with substituted alkene (dienophile) results in the formation…

Q: Label each compound as aromatic, antiaromatic, or not aromatic. Assume all completely conjugated…

A: Aromatic molecules are cyclic, conjugated, have (4n+2) pi electrons, and are flat. Anti-aromatic…

Q: Resveratrol is an antioxidant found in the skin of red grapes. Its anticancer, anti-inammatory, and…

A: a). Resonance structures for the radical that results from homolysis of the OH bond: The radical…

Q: Chlorobenzene give reaction with kmno4 or not??

A: KMnO4 or Potassium permanganate is a very powerful oxidizing agent that can directly any alkyl group…

Q: Classify the diene as conjugated, isolated, or cumulated: Classify the diene: conjugated isolated…

A: Answer: the given diene is a conjugated diene so option A is correct

Q: Rank order the following in terms of relative reactivity (most reactive on the left, least reactive…

A: Since for this problem we have to determine the order or reactivity of different carbonyl. We are…

Q: Complete the table with respect to each structure. m Structure Planar? Completely Conjugated? # of…

A: Planarity: In the first structure there is a carbanion present. The hybridization involved in…

Q: Rank the following alkenes in order of increasing stability:

A: The stability of alkene depends upon the degree of substitution and due to the hyperconjugation…

Q: (b) Discuss about the stability factors of the reaction intermediates, which involved in a name…

A: The answer is as follows:

Q: Which compounds (B–F) are identical to A? (b) Which compounds (B–F) represent an isomer of A?

A: Given:

Q: 14. Add substituents to the two chair conformations of the trisubstituted compound. Energy, Energy_…

A: The trisubstituted conformer contains three substituents on the cyclohexane ring.

Q: a. Rank the follow radicals from least to most stable. CH3 CH3 CH3 .F A B C D Now, explain…

A: Radical is a electron deficient species. Any electron donating group stabilize it and electron…

Q: Rank the following alkenes from most to least stable. А. В. С. D.

A: In this question we have to tell the stability of the alkene from most stable to least stable.

Q: a) b)

A: In photochemistry, we learn about cycloaddition reactions. The one important reaction of this type…

Q: a. How many s bond orbitals are available for overlap with the vacant p orbital in 1. the isobutyl…

A: An orbital is a 3D description of the location of an electron around an atom. s, p, d, f and so on…

Q: Rank the attached radicals in order of increasing stability

A: Free radicals refer to the type of reactive intermediate in which a homolytic cleavage of bond takes…

Q: Which alkene in each pair has the larger heat of hydrogenation?

A: The more is the substitution on the double bond in an alkene, less is the heat of hydrogenation of…

Q: Rank the stability of the following alkenes from least to most stable. а. b. с. (А) а, b, с (B) b,…

A:

Q: Which alkene in each pair has the larger heat of hydrogenation?

A: The given pair of alkenes are,

Q: Rank the alkyl halides in order of increasing E2 reactivity. Then do the same for E1 reactivity.

A: The factors that influence the order of ( E1 and E2 ) elimination reactions are:  1) The reactivity…

Q: Draw Diene + Draw Dienophile of

A:

Q: Considering both 5-methylcyclopenta-1,3-diene (A) and 7-methylcyclohepta-1,3,5-triene (B), which…

A: On losing Hb, the compound gain aromaticity. Thus, Hb will be the most acidic, and Ha will be the…

Q: ,including all stereoisomers of the product.

A: This reaction is Dieles Alder reaction because it's have diene and dienophile Compound in the…

Q: Explain why compound A is much more stable than compound B.

A: The compare the stbaility of the two compounds above we check whether the compound is aromatic or…

Q: Rank the following carbocations in terms of stability from lowest to highest. to A B C D

A:

Q: What diene and dienophiles are used to make the following compounds? b. :a.

A: Answer:- This question is answered by using the simple concept of Diels -Alder reaction in which…

Q: Which diene in each pair has the larger heat of hydrogenation?

A:

Q: Draw the products of radical chlorination and bromination of each compound. For which compounds is a…

A: a.

Q: With reference to diene A: What product is formed when A undergoes a [2 + 2] cycloaddition?

A: Cycloaddition is a chemical reaction in which unsaturated molecules combine to give a cyclic adduct.

Q: Using the resonance theory which carbocations is more stable ? And why ?

A: When a single Lewis structure fails to explain all the properties of a molecules resonance comes…

Q: What diene and dienophile are needed to prepare attached product ?

A: This is a diel's alder reaction in which a diene reacts with a dienophile to give the desired…

Q: Which alkene in each pair has the larger heat of hydrogenation? See in attachment ?

A: Heat of hydrogenation: It is the catalytic hydrogenation of alkene. It mainly measures the stability…

Q: Rank the following carbocations from most stable to least stable. +) +) A B C

A:

Q: What alkyne gives each compound as the only product after hydroboration-oxidation?

A: Hydroboration reaction takes place in the presence of a BH3 or B2H6 and H2O2, and will lead to the…

Q: Compounds A and B are both hydrogenated to methylcyclohexane. Which compound has the larger heat of…

A: The given compound is The compounds A and B give methylcyclohexane on hydrogenation.

Q: Explain Dickmann cyclzation ?

A: Dickmann cyclization or dieckmann condensation is named from the german scientist Water Dieckmann.…

Q: What diene and dienophile are needed to prepare each compound by a Diels–Alder reaction?

A: In Diels-Alder reaction, a dienophile reacts with a diene to yield a cyclic adduct. The reaction…

Q: Explain why alkene A is more stable than alkene B, even though Bcontains more carbon atoms bonded to…

A: Given compounds,

Q: Draw the products of radical chlorination and bromination of eachcompound. For which compounds is a…

A: Bromination is more selective than chlorination and secondary halogenation is preferred in case of…

Alkynes

Alkynes are organic compounds that contain at least one triple bond between carbon-carbon atoms. They are a series of unsaturated compounds with a general molecular formula, CnH2n-2.