Predict the structure of the product for the following pericyclic reactions. (i) Ph Нeat `CH3 Cope Rearrangement (ii) COOCH3 Heat [2+2] Cycloaddition COOCH3 (ii) Heat `CH3 Hydrogen shift
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![Predict the structure of the product for the following pericyclic reactions.
(i)
Ph
Нeat
CH3
Cope Rearrangement
(ii)
ÇOOCH3
Heat
[2+2]
Cycloaddition
ČOOCH3
(ii)
Heat
`CH3
Hydrogen shift
(iv)
CF3
Нeat
[4+2] cycloaddition
4
(v)
COOME
Bn
Нeat
Claisen Rearrangement
Et
(vi)
OH
Heat
Electrocyclic
OH](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc27b5423-5ba2-47ba-a1af-ed43964ab55a%2F8fabafca-d328-4eb6-bc5d-665de2c0dc12%2Faui7fz_processed.jpeg&w=3840&q=75)
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- Q6 Show how you would accomplish the follwoing transformations. (a) 2,2dibromobutane to but-1-yne (b) but-1-yne to oct-3-yne (c) trans-hex-2-ene to hex-2-yne (d) cyclodecyne to cis-cyclodecene (e) cyclodecyne to trans-cyclodecene (f) hex-1-yne to hexan-2-one, CH3COCH₂CH₂CH₂CH3 (g) hex-1-yn to hexanal, CH3(CH₂)4CHO (h) trans-hex-2-ene to cis-hex-2-enePredict the major product(s) for each reaction. Include stereochemistry where appropriate.(a) 1@methylcyclohexene + Cl2>H2O (b) 2@methylbut@2@ene + Br2>H2O(c) cis@but@2@ene + Cl2>H2O (d) trans@but@2@ene + Cl2>H2O(e) 1@methylcyclopentene + Br2 in saturated aqueous NaClPredict the major product(s) for each reaction. Include stereochemistry where appropriate.(a) 1@methylcyclohexene + Cl2>H2O (b) 2@methylbut@2@ene + Br2>H2O(c) cis@but@2@ene + Cl2>H2O
- Identify the reagents nacessary to accomplish cach of the following transformations. Choose the correct reagents from the following list: CH;CH;COCI, AICI, Fuming H3SO4 CH:CH;CI, AICla SOCI, Pyridine dilute H,S0. Zn(H, HCI, heat (CH:)2CHC, AICI; HNO, HaSO4 Enter the correct letter for sach stap of the reaction in the boxes below. (Reagents con be usad more than once) Step A: Step B: Step C:6. Write the IUPAC name for the following compounds. Show the stereochemistry whenever required (a) HO NH2 CI (b) NH2 QH но (c) он Br H. (d) (e) OH Br BrAddition of HCl to alkene X forms two alkyl halides Y and Z. (A) Label Y and Z as a kinetic or thermodynamic product and explain why. (B) Explain why the addition of HCl occurs at the exocyclic C=C, rather than the other C=C
- 6-46 Show how each compound might be synthesized by the SN2 displacement of an alkyl halide. SCH,CH, (a) -CH₂OH (c) (d) CHÍNH, 6-47 (a) Give twn synthecac fox (CI) qu (b) (e) H₂C=CH-CH₂CN n OLL BU (1) H-C=C-CH₂CH₂CH₂(a) Rank the following carbocations in order of increasing electrophilicity (1 = lowest electrophilicity, 4 = highest electrophilicity). (b) Rank the following 1,1-halomethylcyclopentanes in order of reactivity in an SN1 reaction (1 = lowest reactivity, 4 = highest reactivity. CH3 CI B with SNI, nor reactive means more stable (c) Rank the following species in terms of increasing nucleophilicity in an SN2 reaction in a po aprotic solvent (1 = lowest nucleophilicity, 4 = highest nucleophilicity).V. @Given the following mechanism fer me Y OCHS NaOH reaction show the detailed conversion of A to B •OCN3 CH3OH. OH (A) (B) c Ⓒ using the same detailed mechanism instead of cyclonexare ring as shown in product. B, propose and fer a product wil a cyclopentane ning instead of a cyclohexane viny. Ⓒ Exploumpand I with why campand (B) is preferred over the campanay campand with a cyclopentake ring..
- For each reaction, decide whether substitution or elimination (or both) is possible, andpredict the products you expect. Label the major products. chlorocyclohexane + NaOCH3 in CH3OH(i) OEt OEt 1) NaOEt 2) H3O* workup W 1) NaOEt 2) Br V Compound W can be synthesised in an excellent yield via an intramolecular Claisen reaction of 1,6-diester V. Draw the structure of product W and provide detailed reactions mechanisms to account for its formation. (ii) Draw the product X which would form upon the alkylation reaction of W with the reagents shown.What product(s) would you expect to obtain from reaction of 1, 3-cyclohexadiene witheach of the following?(a) 1 mol Br2in CH2Cl2(b) O3followed by Zn(c) 1 mol HCl in ether(d) 1 mol DCl in ether(e) 3-Buten-2-one (H2C = CHCOCH3)(f) Excess OsO4, followed by NaHSO3