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- What is (are) the major organic product(s) obtained from the following reaction? Br2 O (2R,3R)-dibromobutane meso-2,3-dibromobutane O (2S,3S)-dibromobutane O Racemic mixtureProvide the structure of the missing products or reactants. Show the relevant stereochemistry if necessary. H3C Br H₂O _SH [4© 1 product 2 products (2 isomers) ✓ OH + ?<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
- Provide the structure of the organic products(s), which result in the reaction below. (Hint: it's a substitution product; show stereochemistry joll| CI CH3 Br CH3CH₂OH CNb) Refer to the following equation to answer Q3b (i), (ii) and (iii). CH3 H,SO, Н—с—он C-CH3 ? + H2O Но- ČH3 (i) Determine the product of the above reaction. (ii) Name the above reaction. (iii) Propose the mechanism for the above reaction.C10T03Q1068 Give the major product of the following reaction. HBr ((CH3)3CO)2
- Predict the major products of the following reactions. If it is possible, write all stereoisomers. (1) NANH a) H20 d) (2)PhCH,Br (3) HNIB (P-2) H2S04 b) Br2 e) 03 (1) BH3 THF c) (2) NaOH, H20Nonconjugated , -unsaturated ketones, such as 3-cyclohexenone, are in an acid-catalyzed equilibrium with their conjugated , -unsaturated isomers. Propose a mechanism for this isomerization.4. Predict the major product of the following reactions. NBS (a) 0°C Na,Cr,07 H,SO, H,0 (b) он H,SO4 CH,OH (d) heat Br
- 1) Give the major organic product of each of the following reactions. You do not need to show stereochemistry. 1) Mg Br 2) H20 1 D- 1) LIAID4 2) H20 2 1) CH;SO2CI, pyridine HO, 2) CH3SNA 3 (CH;CH2)2CULI 4 ОН HBr LOPredict the major product of the following reaction. (CH3)3C-OOH LOH TI[OCH(CH3)214 (-)-DET Dom -OH 11 OH Io ||| Ø OH IVPredict the major products of the following reactions. If it is possible, write all stereoisomers. (1) NANH a) H20 d) (2)PhCH-B (3) H2NIB (P-2) H2S04 b) Br2 03 (1) BH3 THF c) (2) NaOH, H202