2.) Which is a pair of enantiomers? CH3 H3C CI ČH;CH;CH3 CH3 CH3 CH;CH;CH3 H3C CI CH;CH2CH; II II CH,CI CH;CH2CH3 H3C CI CH;CH2CH3 IV V A. I& II and III & IV В. I & II С. II & IV D. IV & V

Q: A reaction proceeds with a 13:3 ratio of enantiomers. Convert this ratio to the percent enantiomeric…

A: % enantiomeric excess is given by the difference of percent major enantiomer and percent minor…

Q: ОН A `NH2 NH2 Which labelled carbon (A or B) is chiral? (A) B B) A

A:

Q: SN2 reactions that involve substitution at a chirality configuration of one molecule to another,…

A: When reaction is undergoes though SN2 mechanism the configuration of product is 100% inversion , as…

Q: Br2 1. m-CPBA H*, H20 m-CPBA + HCI H2, Pt 5. + 2. 3. 4.

A:

Q: Rank the following groups in order of decreasing priority.              −F, −NH2, −CH3, −OH

A: Priority order is helpfull in writing IUPAC naming of organic molecule containing more than one…

Q: Dtermine the Product from the rxn 1. ΗΝΟ,/Η,SO4 2 Br2/FeBr3 Product 3. H2/Pd/C 4. Cl2/FeBr3 5.…

A: Here we have to choose correct option about product of above reaction-

Q: Give the mechanasim Br₂ ccty HBr H₂02 НВО C

A: Reaction 1 : Br2 addition to alkenes produces trans -1,2-dibromo compound. Reaction 2 : HBr addition…

Q: 10. Write priorities on these groups ( 1= highest, 4 = lowest) and assign the stereocenter as R or…

A: Here we are required to assign R /S configuration to stereocentre.

Q: KOC(CH3)3 Br2 KOC(CH3)3 NaNH2 CH3I D C=CCH3 (2 equiv) DMSO

A: KOC(CH3)3 is known as Potassium tertiary butoxide. It is a highly hindered strong base generally…

Q: For the given ee values, calculate the percentage of each enantiomer present.a. 90% eeb. 99% eec.…

A: Constitutional isomers can be defined as the molecules which have the same molecular formula and…

Q: Which is the anti-conformer of pentane? O O O O H H H H CH₂CH3 H CH₂ AMA CH₂CH3 H AYA LID AMA AYA H…

A: We can show newmann projection of alkanes in different way. In alkane C-C bond can easily rotate.…

Q: H Br H- Br Type of reaction? Isit stereospecific? #of streoisomeric products? Relationshie between…

A:

Q: What is the degree of unsaturation present in D.D.T

A: The molecular formula of Dichlorodiphenyltrichloroethane, (D.D.T.) is C14H9Cl5. The structure of DDT…

Q: Which group in each pair is assigned the higher priority in R,S nomenclature? a. – CD3, – CH3 b. –…

A: INTRODUCTION: The arrangement of atoms or groups (LIgands) in space around a chiral centre that…

Q: Provide the structure of the product(s) with stereochemisty if appropriate. If multiple products…

A: A bicyclic molecule is a molecule that features two joined rings. A dehydration reaction is a…

Q: 1. NaBH, 91% 2. TMSC=CMgBr, MEOCOCI, O°C, 65% 3. KCOS, MeOH, 70% 1. MCPBA, O'C, 96% 2. cat.…

A: Mechanism of Sonogashira coupling:

Q: Which is/are optically inactive? CH,CH, -OH H CH3 H OH H- H. CH3 OH, OH H- HO CH3 CH3 CH3 I II III I…

A:

Q: Explain why compounds of Zn2+ are white, but compounds ofCu2+ are often blue or green?

A: Zn2+ has the electronic configuration of [Ar] 3d10 with all the electrons paired in the d-orbitals.…

Q: Fill in the following missing organic structures,.Consider stereochemistry (R/S and/or E/Z…

A: Carbocation has tendency of rearrangement tendency.

Q: Rank the following groups in order of decreasing priority.                    −C≡CH, −CH(CH3)2,…

A:

Q: 1. Arrange the following substances according to increasing boiling point? Explain why. I.…

A:

Q: Identify the FALSE statement pertaining to SN1 and SN2 mechanisms: An SN2 reaction will result in an…

A: We have to predict the false statement.

Q: Decreasing order of stability of carbocation is (1) (1I) (II) (IV) CH,0° O,N |> || > III > IV III >…

A: The molecule in which carbon atom contains a positive charge and three bonds is known as…

Q: Identify the FALSE statement pertaining to SN1 and SN2 mechanisms: An SN1 substitution occurs in…

A:

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: Which structure is conjugated? -CN

A:

Q: 1. BH3 -> d) 2. H, Oz C

A: In a given question, we have to find out products of a given reaction . In a first reaction BH3 in…

Q: Rank the following groups in order of decreasing priority.           −NH2, −CH2NH2, −CH3, −CH2NHCH3

A: Priority is given to elements on the basis of atomic numbers. If the atomic number is more, its…

Q: a. b. C. [າ (. [1] CH,LI [2] H₂O CuLi [2] H₂O [1] (S)-CBS reagent [2] H₂O

A: Here we have to write the major product formed with stereochemistry in the following given…

Q: a) b) c) NH 1- Br₂ (excès), KOH 2- H3O+ 1-SOCI₂, DCM 2- AICI 3 NH 1- DCC 2- NH₂

A:

Q: dral representa R enantiomer o o form of 3,5-he

A:

Q: Determine the absolute Configuration (Rors) of the Stereogenic centre in compounds (i) and (ii)

A:

Q: Rank the following groups in order of decreasing priority.         −COOH, −CH2OH, −H, −CHO

A: The following groups have to be ordered in the order of decreasing priority, The order of priority…

Q: Show how to accomplish the following conversion using reagents from the table. Br When only one…

A: We have given the organic reaction and we have to find the reagent need to do this transformation.…

Q: А. `NH2 + CH3CH2O- B CH3 + H3C H3C

A: Correct option is (B) Because acetate ion is a weak base . Anion of acetate is stabilized by…

Q: give both answer just with little bit explanation 10. (6) Blank 1: which is product X. Type a letter…

A: I have given the answer in the explanation section. Hope you will understand that.

Q: Select to Draw OsO4 (catalytic) NMO OH OH

A: Write reactant of the given product---

Q: Which group in the following pair is assigned the higher priority in R,Snomenclature −CH2NH2, −NHCH3

A: The carbon atom containing four different groups is called Chiral centre. Each chiral centre can be…

Q: For the following molecules: a. How many stereogenic centers are present? b. How many…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: Naproxen, sold under the brand name Aleve among others, is a nonsteroidal anti- inflammatory drug…

A:

Q: Arrange the following group  in order of increasing priority. Q) -CH3 -H -Br -CH2CH3

A: Increasing order of priority : -H < -CH3 <  -CH2CH3  < -Br   Priority is determined by…

Q: (1) BH3 (2) H,O,, H,O, NaOH Product is (circle one) i. A racemic mixture ii. A single enantiomer,…

A: Since you have asked multiple question, we will solve the first question for you.If you want any…

Q: Explain Dickmann cyclzation ?

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

Q: Provide the structure of the product(s) with stereochemisty if appropriate. If multiple products…

A: For reaction1. The deutrated solvent i.e D3O+ attack the carbonyl carbonyl and lead to formation of…

Q: Complete the reaction map below by matching the answers for A-E. Cl2 PONH D- Fecls CH3CI B KM,O4 C E…

A:

Q: Q.2 Give the structure(s) of the major organic produc(s) of I-L and O-P, Show stereochemistry if…

A: The possible major products, I and J, for the alkyne [1] are shown below.

Q: (1) Structures __________ and ____________ are enantiomers. (2) Structures __________ and…

A: Given; structure

Q: Which is/are optically inactive? CH,CH3 CH3 H, HCH, HHO -OH OH ÓH HO YH H' CH CH, CH3 II II I and II…

A: I.

Q: Provide the structure of the product(s) with stereochemisty if appropriate. If multiple products…

A: All the three reaction contains base and base abstracts the acidic proton and the carbanion attacks…

Q: 18) Can the molecule shown below be properly described as a meso compound? a) b) c) CI CI CI CI

A:

Reactions of Ethers

Ethers (R-O-R’) are compounds formed by replacing hydrogen atoms of an alcohol (R-OH compound) or a phenol (C6H5OH) by an aryl/ acyl group (functional group after removing single hydrogen from an aromatic ring). In this section, reaction, preparation and behavior of ethers are discussed in the context of organic chemistry.

Epoxides

Epoxides are a special class of cyclic ethers which are an important functional group in organic chemistry and generate reactive centers due to their unusual high reactivity. Due to their high reactivity, epoxides are considered to be toxic and mutagenic.

Williamson Ether Synthesis

An organic reaction in which an organohalide and a deprotonated alcohol forms ether is known as Williamson ether synthesis. Alexander Williamson developed the Williamson ether synthesis in 1850. The formation of ether in this synthesis is an SN2 reaction.