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- Which conditions will produce the target product in the highest yield? O A) 1. BH3; 2. H₂O₂, NaOH, H₂O B) 1. OsO; 2. S(CH3)2 C) 1. Hg(OAc)₂, H₂O; 2. NaBH4 D) H₂SO4, H₂O A ? B OH racemic mixture3. Predict the major product(s) of the following reactions. a. HO.... b. C. OH OH o CI POBr3 excess OH CrO3 H₂O, H₂SO4 Acetone Me MsCI -OH PBr3 KF MeCN3. Predict the major products for the following reactions. Indicate the type of mechanism observed (EAS, NAS, or elimination-addition). a. b. C. NO₂ Br Br CI NaOMe heat 1. NaNH2, NH3 2. H3O+ NaNH2, NH3
- Steps 'H. Which reaction steps would you use to carry out the synthesis shown? phenylacetylene 1. Na/NH3; CH3CH2Br 1. Hвr 2. (C2H5)2CULI 1. HBr 2. NaNH2; CHЗCH2Br 1. NaNH2; CH3CH2Br 2. LI/NH317. Which of the following is a mechanism for an SN2 reaction? III. نعت a. I b. II c. III d. IV e. Both I & II LAM Br CN O + Br IV - Br + BrWhat is the MAJOR product of the following reaction sequence? 1) NaOEt, ELOH, heat 2а) ВН,; THF 2b) H2O2, NaOH CI ... + en .... В ... + en SE ... en OH
- 6.) Fill in the major final product(s) for each reaction scheme below. 1. TsCl, pyridine 2. NaBr, DMF 3. NaCN, DMSO OH Br HOM NaOH H₂O, A 1. H₂SO4, A 2. H₂, Pd-C 1. Br₂ 2. XS NaNH, 3. H₂O 4. XS HBr7. Reaction Scheme. NH₂ NH2 or two differnet methods (no same steps/reagents) C5H12N2 1. xs Mel, xs K2CO3 2. Ag2O, H₂O 3. heat Br2, xs NaOH, xs H₂O OHC 1.03 2. DMS CHOProvide the missing intermediates and final product in the following synthesis. 1. LDA (excess). A 2. Н,о Br2 1. NaH В 2. C H,/Pd CI4 Lindlar catalyst ВА 1. CH,MgBr H,CrO4 D E 2. NH,CI, H,O F G
- Examine each reaction. Determine the mechanism (E1, E2, SN1, or SN2) for each reaction. SN1 E2 E1 SN2 CH2CH3 OocCHa)s CH2CH3 CH2CH3 А. Br major product Br DBU В. OOCH,CH, C. „Br Ooc(CH)a D.15. a. Predict the major product for each of the following reactions. Include stereochemistry when appropriate. If more than one product forms indicate Major, minor, and very minor as applicable. میں Me Me Me!!!.. A Br B "Et Br Et Br Et KO'Bu, DMSO KO'Bu, DMSO KO'Bu, DMSO b. Rank the reactions according to increasing rate:What products would be generated for the hydrogenation reaction shown below? H2, Pt ? i. ii. ii. iv. V. O i., ii. only v. only O i., iii. only O ii, iv. only O i., ii., ii., iv. only