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- + H3C- CH₂ - CH2 - COR and have undergone McLafferty rearrangement and Ortho effect respectively. What are the possible fragments obtained as a result of these processes ? COOCH3 OH + (A) [R-CH₂-C (A) R-CH₂-CH₂ - CH₂ - COH @E OH]: [c C6H4 O and CO (B) H₂C=CROH and H₂C = CH₂ [2] : [ C₂H4O3 and CH4 (C) (D) H₂CCROH and C₂H4; [(C6H4O), CO and CH₂OH] RH, C₂H4 and CH₂CO; [(C₂H4O), CO and CH₂OH]Q. 7 Write product(s) of the following reactions with appropriate stereochemistry, if any. N2 hv Нeat а) b) -SO,N3 CH3OH CH3 CH;ONa OH SOCI2 c) d) CH3 CH3OH H Br PyridineDraw the structure of the organic product formed when 2,3-butanedione reacts with the following reagents. CH3 -C-C-CH3 | (a)H2/Ni (b)l2/NAOH 3D
- Give the Major product(s) and name the starting compound with stereochemistry: H2O H2O H2SO4 H,SO, HgSO,11. Plan syntheses of the following compounds. You may use the given starting material and any compound containing five or fewer carbons. (a) MeO MeO CN TOXXON anything with five or fewer carbons. CN (b) (c)Provide the structure of the product(s) with stereochemisty if appropriate. If multiple products indicate major product or if products are formed in equal amounts. If there is no reaction expected explain why. (a) OH HIO4 (the protecting group is remained) CHO H HOH2C OH (b) CHO -ОН NaCN # HO -H H -OH CH₂OH (c) CHO HO- -H HO -H NH₂OH 張一 H -OH H -OH CH₂OH i) Ba(OH)2 ii) MeOH, H₂SO4 NaOAc Ac₂0 NaOMe MeOH
- 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 BrThe MAJOR product of the following reaction is: (a) HO (b) CH3 OH m H3C S S S ******** CH3 CH3 CH3 CH3 + R, S H3O+ CH3 (c) (d) H3C H3C H3C CH3 R S OH OH CH3 +R +S CH3(a) Provide the missing reagents and line structures of the products (C- E) for the following reactions. Include stereochemistry for products Cand E as indicated. No mechanisms are required. (5) C H,0 Show stereochemistry any one diastereomer OH PCC. CH;Cla D H. Pd/C Show stereochemistry any one enantlomer
- 2-Give the structures, including stereochemistry of compounds A and B in the following sequence of reactions: OH O₂N- -SO₂Cl Pyridine Compound A LiBr Acetone -Compound BA chemist allows some pure (2S,3R)-3-bromo-2,3-diphenylpentane to react with a solution of sodium ethoxide(NaOCH2 CH3) in ethanol. The products are two alkenes: A (cis-trans mixture) and B, a single pure isomer. Under the same conditions, the reaction of (2S,3S)-3-bromo-2,3-diphenylpentane gives two alkenes, A (cis-trans mixture) and C. Upon catalytic hydrogenation, all three of these alkenes (A, B, and C) give 2,3-diphenylpentane. Determine the structures of A, B, and C; give equations for their formation; and explain the stereospecificity of these reactions.3. Give the Major product(s) and name the starting compound with stereochemistry: H20 H,O H,SO, H,SO, HgSO, a.