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- 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 MeOHA E OH OH H This is a(n) OH R B F PCC, CH₂Cl₂ H type reaction. The major product if R = CH₂CH3 is compound The major product if R = H is compound G Look at the given reaction and use the letter code corresponding to each compound in the blank to indicate the expected product(s), or fill in the blank with the appropriate vocabulary word or phrase. If a specific stereoisomer (e.g single enantiomer) is formed, select that isomer only. If a mixture of stereoisomers (e.g. racemic or diastereomers) is formed, select the single structure that shows the appropriate mixture (e.g. lines not dashes). If we convert the reagent to Na2CrO4, H₂SO4, H₂O: The major product if R = CH₂CH3 is compound The maior product if R = H is compound ??? OH D H H though compoundWhat is the best description of the product distribution from the reaction shown (- OTF=triflate, trifluoromethanesulfonate) Na OH,coo CH, COOHH,0 C D. DA mixture of compounds B and D OA mixture of compounds A and C OA mixture of compounds A and B OA mixture of compounds A and D
- H11.32 - Level 2 :: Unanswered • 3 attempts left What is the major product of the following reaction? A A В В C D D E E H Et Br NaOCH; HOCH H. Et Et Et H H OMe Et Racemic Mixture в H Et OMe HDraw the structures of A, B, C, D, E, F, G, and H in the following reactions. Pay special attention to stereochemistry if necessary! (no mechanism required!) x G OH TsCl pyridine Iciº OH NaOH mCPBA dil. KMnO4, HO H₂O, cold H₂O E A с OH K₂CO3 HA EtOH cat. HA MeOH F B Br₂, -5 °C D Ha Draw the structure of the intermediate (I) for the reaction below. Hg(O2CCH3)2 NaBH4 Product CH;OH H3C • Use the wedge/hash bond tools to indicate stereochemistry where it exists. If the reaction produces a racemic mixture, just drawv one stereoisomer.
- Which is the better method to synthesize n-propylbenzene? A) B) CH3CH₂-C-CI AICI; CH3CH₂-CH₂-CI AICI; CH₂-CH3 CH₂ Zn (Hg) HC1 CH₂-CH₂ CH₂ CH₂-CH3 - Which is the better method to synthesize n-propylbenzene? CH₂-CH3 -- Ja A) B) CH3CH₂-C-CI AICI; CH3CH₂-CH₂-Cl AIC13 CH₂ Zn (Hg) HC1 CH₂-CH₂ CH₂ CH₂-CH3What is the major product from this reaction (including stereochemistry if relevant)? OH Compound O Compound P Compound Q Compound R HO P OH BH 3 THF THF; NaOH, H₂O2 H₂O Q OH ?? I R OH
- What is the expected product of the reaction shown? (Z)-3-hexene+mCPBA. + enantiomer O O OI O IV ||| + enantiomer || + enantiomer IV35. The major product formed when H,C is oxidized with K;Cr;O7 Br (A) (C) H,C OH Br Br (D) No reaction occurs. H,C Br 36. Which reagents would you use to accomplish the following transfomation? „CH,CH,OH „CH,CH (A) Hi, Pd (B) H,SO,, H,O (C) PCC (D) K;Cr,Or, H;SO, 37. What is the major product of the folowing reaction? OH H2SO4 (catalyat) heat (A) But-1-ene (B) But-2-ene (C) But-3-ene (D) But-4-ene 38. Which of the following molecules would have the highest boiling point? (A) CH,CH.CH,Ci (B) CH,CH CH,OH (C) CH,CH CH, (D) CH,CH,COOH 39. The common name for the compound shown on the right is: (A) acetaldehyde (B) dimethyl aldehyde (C) formaldehyde (D) methylmethanal CH3CH 40. Which reagent can be used to accomplish the following transformation? -CH=CHCHO -CH=CHCH;OH (A) pyridinium chlorochromate (B) NABH, (C) Tollens' reagent (D) H, PtQ12. (1-bromoethyl)benzene 1 udergoes an elimination following an E1 mechanism. Fill in the following synthetic scheme by drawing the structure of intermediate 2 and product 3. The chemical formula of product 3 is provided as guidance. CH; RDS Br C3Hg E1 2 3