Starting from the structure below (sighting down the indicated bond), rotate the back carbon to provide the structure in the conformation that will be capable of an E2 elimination. R/S stereochemistry is graded. Ph H HE H Br Ph CH3

Q: Starting from the structure below (sighting down the indicated bond). rotate the back carbon to…

A: For the E2 elimination to occur leaving group and H on beta carbon should be anti-periplanar.

Q: 1. Draw all of the Newman projections for rotations about the C3→ C4 bonds in…

A: Answer: To visualise the organic molecule, there are different projection formula used. Newman…

Q: Н CH3 1. NaBH4 2. HCI (ac) (10%) conformación antimolansu esin

A: NaBH4 act as nucleophile and attack from less hindered side.C=O have two face, nucleophile attack…

Q: CO 20: Convert between names, bond-line structures, Newman and Fischer projections. A Fischer…

A: The answer is given as follows

Q: We saw that the energy cost of an axial methyl is 1.8 kcal/mol; therefore, we might expect…

A: Conformation of  cyclohexane are 1)Chair conformation  2) Boat confirmation  3) Half chair…

Q: stereogenic centre

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Q: 1-methylcyclohexene is reacted with the following reactants. Write products. Write which…

A: 1 Bromination  2 Formation of cyclopropane

Q: Draw the most stable conformation of these compounds. a) trans-1-methylbicyclo[4.4.0]decane b)…

A: First compound is a trans decalin the methyl group must be in an equatorial position.In the second…

Q: 7. Write the structure(s) of the major product(s) for each of the following reactions and show any…

A: Step 1:Reaction (a):Reaction Conditions:Reagent: Br2​Conditions: hv (light), in CCl4, room…

Q: How would the HNMR of these two compounds be different when taking into account the stereochemistry?…

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Q: Starting from the wedge-and-dash structure below (sighting down the indicated bond), rotate the back…

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Q: 1. Draw the best chair conformation of cis 1-chloro-4-isopropylcyclohexane.

A: for cis isomer, two groups remain in same direction or same side. Here -Cl and -CH(CH3)2 groups…

Q: Identify the most stable conformation of trans-1-methyl-4-bromocyclohexane (5). A B Me (5) Me Br A…

A: Step 1:

Q: 5. The most stable chair conformation of trans 1-isopropyl-3- metnylcyclohexane is: CH 6. Which…

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Q: Consider a Newman projection of butane shown. from the strain present in this conformation. H. H H H…

A: From the given Newman projection, we have to identify the number of different strains present. Then…

Q: What is the absolute configuration of the two carbons in this compound? H H BrCH, OA. S-left carbon;…

A: -> For configuration give numbering according to preority then rotate 1->2->3 if clockwise…

Q: Draw the least stable chair conformation of 1-ethyl-4- propylcyclohexane. Why is it the least…

A: Cyclohexane has found in chair conformation.When both substituents are on equatorial position then…

Q: Directions: For each item, match the description with the following choices of alkenes. Write only…

A: Alkene having high priority groups on same side of the double is known as Z isomer. Alkene on…

Q: The two alkenes below react with HI at different rates. [References] CH3 CH;CH=CHCH3 and CH3Ċ=CHCH3…

A: Addition reactions of alkene follow Markovnikov's rule in most of the cases.

Q: Starting from the structure below (sighting down the indicated bond), rotate the back carbon to…

A: Alkyl halide gives an elimination reaction by reacting with a strong base. E2 reaction involves a…

Q: VIII. (-)-Menthol can be isolated from the peppermint plant and is responsible for the…

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Q: Shown below are two different structures representing 1,2,4-trimethylcyclohexane. What is the…

A: The question is based on the concept of stereochemistry.We need to establish the relation between…

Q: One of the chair conformations of cis-1-bromo-3-methylcyclohexane is more stable than the other by…

A:

Q: Assign E or Z configurations to alkene below. но-

A: Alkenes are assigned E/Z configuration based on the groups attached on the carbons making the double…

Q: Do not use chatgpt. Thank you!

A: Most Stable Chair Conformation of a Cyclohexane Derivative Given a cyclohexane derivative, we must…

Q: 11. Trans-1-bromo-2-methylcyclohexane will yield a non-Zaitsev elimination product (3-…

A: Alkyl halides give an E2 elimination reaction with KOH. In the E2 elimination reaction, the removal…

Q: The potential energy diagram will look at the energy levels as the carbon-carbon bond rotates. Let's…

A: Gauche interaction shows by Methyl group at 60 degree angle.

Q: Stereo chemistry Fully Name Elz R/S OR Nome These using EZ I C-C-C 1. Br

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Q: 22. Using the template on the right, fill in the missing cyclohexane compound from the indicated…

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Q: For each of the following reactions, draw the skeletal structure(s) of the most stable conformer for…

A: Cold alkaline KMnO4, H2O/MeOH favors syn-addition of two -OH groups (Syn-dihydroxylation) to alkene.…

Q: mdet te major arodeet for he lowing trenetomation. e minda of siereechamitry, wen sppl Me. 1. ВНз…

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Q: Draw the Newman projection (sighting down this bond) of the conformation that will be capable of an…

A: E2 elimination is bimolecular elimination reaction.

Q: 17. In the space provided below please draw (cis)1,3-dimethylcyclohexane in the most unstable chair…

A: Concept:  1) most unstable conformation meaning that the molecule will have higher energy & this…

Q: Type the name of the following molecule. Be sure to include stereochemistry NH2

A:

Q: Draw the HOMO of the following 5-carbon conjugated pi systems and draw the thermal and photochemical…

A: According to Woodward- Hoffmann rule , the system contains 4n pi electrons, then it undergoes…

Q: Give the major product for the following E2 reaction considering all possible conformers. CH3…

A: E2 reaction :  The E2 mechanism where E2 stands for biomolecular elimination reaction. This reaction…

Q: How many gauche interactions are present in the most stable chair conformation of…

A: Two conformers can be drawn for 1,1,2-trimethyl cyclohexane.  In one conformer, C-1 and C-2 methyl…

Q: Name the following compound. Include the appropriate stereochemistry (R & S). CI All Cl

A: In this question we have given an organic compound and we have to write the name of the compound…

Q: Starting from the wedge-and-dash structure below (sighting down the dicated bond), rotate the back…

A: The step-wise stereochemistry is discussed belowOptical activity is defined as the reaction of…

Q: Which Newman projection for the conformation of 2-methylbutane will have energy II on the potential…

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Q: 2. Our knowledge of chair conformations allows us to use them to determine a great deal about a…

A: Repulsive interaction between  an axial substituent located on carbon atom 1 of a cyclohexane ring…

Q: The AG° for the conversion of "axial" methylcyclohexane to "equatorial" methylcyclohexane at 298K is…

A: Given data,∆G=-1.74kCal/molTemperature=298KR=1.987×10-3kcal/mol/K

Q: See Figure 8-2. Both Compounds A and B are achiral. When they react in the presence of a base and…

A: This is aldol addition reaction, a type of nucleophilic addition reaction.In first step, proton…

Q: blem 7: For the following molecule assign R/S for each indicated chira h alkene (R) HO, H3CO" (R) HO…

A: R and S given by CIP rule in which prority is given which have highest atomic mass  If we rotate…

Q: OCH3 "OH H3C CH2CH3 CI CH3 H3C H CI H OH H3C H. CH2CH3

A: IUPAC RULES :   Find and name longest continuous chain(Parent chain) with functional group if…

Q: 3. Show the Newman Projection of the conformation of compound below that gives the product shown. Ph…

A: This is elimination reaction and for elimination reaction hydrogen and bromine must be…