11) Which of the following is (2R, 3S)-2,3-pentanediol? он OH Он он он OH он он A B D

Q: 35) Which of the following processes is an example of tautomerism (i. e. the rapid interconversion…

A: Answer: d Explanation: Tautomers are isomers of a compound in which position of electrons and…

Q: If benzamide (PhCONH₂) undergoes a Hofmann rearrangement, what is the major product? O acetophenone…

A:

Q: How many stereoisomers are possible for 5-hydroxyhexanal?

A: In the given compound, 5-hydroxyhexanal has only one chiral center which is represented by *.

Q: OH (а) and H. I II OH OH (b) and I II OH (с) CH and FCH I II

A:

Q: Q5. What product is formed when cyclohexanone is reacted with each of the following reagents? MgBr…

A: We have to predict product of reactions.

Q: Which one is the most elecrophilic which one is the least electrophilic

A: There are some factors which directly affects the electrophilicity of the carbonyl group. Mesomeric…

Q: ethanediol with potassium reaction?

A:

Q: What product is formed when the compound below is treated with sodium hydride followed by…

A: When 2-butanol is treated with sodium hydride then due to removal of Hydrogen, sodium isobutoxide is…

Q: low would you synthesize the following compounds from acetylene and any alkyl lides with four or…

A:

Q: Rank the following carbonyl compounds in order of increasing percentage of hydrate present at…

A: Carbonyl compounds are given they are electrophilic in nature due to the electronegativity…

Q: Write the corresponding products or reagents where necessary to obtain the products.

A: First step dehydro halogenation second step Simmon's Smith Reaction.

Q: Identify A, B, and C, intermediates in the synthesis of the ve-membered ring called an…

A: The base attacks the hydrogen attached to the carbon and formation of enolate ion takes place and…

Q: Arrange the following carbonyl compounds in INCREASING REACTIVITY towards nucleophilic addition.

A:

Q: CH3 CH3 OEt NH3 A в D least reactive most reactive

A: Electrophilic aromatic substitution reaction takes place between the aromatic ring and electrophile…

Q: What's the name of the following compound? Is it a strong base or a weak base? What happens when it…

A:

Q: NaBH4 PQ-18. In which reaction would the addition of the nucleophile be reversible? CH3OH (A) (B) 0…

A: Nucleophilic  addition reaction mechanism:In step-1 nucleophile Y- attack to electrophilic carbon…

Q: Provide a detailed arrow-pushing mechanism for the following transformation: Me PHOH PhO. Et Мe Me…

A:

Q: PQ-23. What are the major products of this reaction? i 18OH OH (B) (D) FO 180 CH3 ܘܐ i NaOH (aq)…

A:

Q: Provide the reagents needed to convert 1-butanol into each of the products shown below. Please…

A: The conversion taking place are given as,

Q: From what aldehyde or ketone could each of the following be prepared by reduction with NaBH4 or…

A:

Q: The reagents that could effect the following conversion are: BH3, then H₂O2 and NaOH. CH3 H₂C ? 8-8…

A: Alkene gives an electrophilic addition reaction with borane. Alkene reacts with BH3 and then NaOH…

Q: Identify A, B, and C, intermediates in the synthesis of the five-membered ring called an…

A: The A,B and C cpmpounds are as given below:

Q: The dehydration of pinacol can take place via two mechanisms, leading to the formation of the two…

A:

Q: Rank the following substituted anilines from most basic to least basic:

A: Electron withdrawing group present in the phenyl ring increases the acidic strength.  This results…

Q: II `NH2 II ОН IV V

A: The increasing order of reactivity in nucleophilic substitution reactions of the given carbonyl…

Q: Propose a plausible mechanism for the following transformation: 1) Excess MeMgBr 2) H₂O HO OH

A: The objective of the question is to predict the product formed in the given reaction.

Q: dentify the major product of this reaction: eq. H H. H * .. OH 0 NaOH -H2O

A:

Q: H,C. Zエ

A:

Q: what is the enamine that will be formed from the below

A: Given is organic reaction. The given starting compound contains two functional groups imine and…

Q: 19 Which of the following ketoesters can be formed by Dieckmann cyclization? L: على علم بلنه DE A D…

A: Dieckmann cyclization : Intramolecular claisen condensation is known as Dieckmann cyclization.

Q: What is an appropriate systematic name for the following? Br 3-bromoacetophenone…

A:

Q: 13:58 ll 4G 5 © T Ô 2. What is the correct IUPAC name for the following compound? CH3 H2N" ČH3…

A: Here we have to write correct IUPAC name of above given compound-

Q: Draw the major organic product that contains the carbon labeled with a * (do not include i si Base:…

A:

Q: Which of the following compounds undergoes the most rapid nucleophilic substitution with amide ion?…

A: Nucleophilic aromatic substitution reaction depending upon nature and strength of the Substituted…

Q: c) When neomenthyl chloride is treated with the two different strong bases below, two different…

A:

Q: Which carboxylate is the strongest base?

A: Carbon chain shows +I effect whereas Cl shows -I effect.

Q: From what aldehyde or ketone could each of the following be prepared by reduction with NaBH4 or…

A: Lithium borohydride (LiBH4) is a stronger reducing agent than sodium borohydride (NaBH4), But both…

Q: 8) OH me H HCI, H₂O h How many stereoisomers are possible for this cyclic hemiacetal? OH

A: Since, Stereo isomers are those whose molecular formula same but rotation around plane polarised…

Q: Draw the structure of the product obtained when this amine is treated with excess iodomethane and…

A: The given amine is-

Q: Quinapril (trade name Accupril) is used to treat high blood pressure andcongestive heart failure.…

A: The reaction mechanism along with the products is given below.

Q: 2) How would you synthesize the following compounds from cyclohexanone? CH₂Br CH₂C6H5 A Br B D…

A: Design a route for the synthesis of compound D from cyclohexanone

Q: Which of the following will be the dominant product of the dehydration reaction shown? H3PO4 H20, A…

A:

Reactions at the Alpha Carbon Atom

The position next to the ketone or aldehyde functional group is termed as alpha position and the reaction which occurs at alpha position is called alpha substitution reaction. In an alpha substitution reaction, the alpha proton atom is substituted by an electrophile by the formation of an enol intermediate or enolate ion intermediate. Most of the carbonyl compounds go through an alpha substitution reaction.