Q: predict major product CC13 CH3Cl AlCl3 ccl3 ccl3 ccl3 A) CH3 B) c) D) No reaction CH3 CH3
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- (4)Rank the following compounds in order of reactivity toward an SÂl reaction. (1-best) CH3CH₂Br H₂C=CHC(Br)CH3 H₂C=CHBr CH3CH(Br)CH34. (5 pts) Extra credit Explain why the "benzyne" reaction (Hint: look at one of the major products) always yields a 50/50 mixture of isomers. A drawing or two would be great!nost" under the one which nder the one which would be acetaldehyde e "most" under the one which would be most t" under the one which would be least soluble in wa formaldehyde butanal Write in the products. Label "major" and "minor" products where relevant. If there is no reaction, write "NR". a) H3C- он H3C H,SO, heat -CH3 b) CH3 1. Hg(Oac), H,0 2. NABH, H3O* --- > c) hexanal d) HO CH3 KMNO, CH3 NaH
- (5 points) Identify the electrophile and the nucleophile in each of the following reaction steps and then draw curved arrows to illustrate the bond-making and bond-breaking processes. C'H;CH CH, + Н-Br CНCH -СH + Br(6) SN2 Reactions: Nucleophiles. Rank the following nucleophiles relative to their SN2 reactivity toward 2- bromopropane (1=fast.4-slow). IN GENERAL, the stronger base = more reactive nucleophile. CHẠCH,OH CH;CH;O Na* Na* NH: NH3(4)Rank the following compounds in order of reactivity toward an SN1 reaction. (1-best) CH3CH₂Br H₂C=CHC(Br)CH3 H_C=CHBr CH3CH(Br)CH3 2 3
- FoE M M FoE * all 61% • .. 10:26 A What is the major Organic product of the following Wolff-Kishner (reduction) reaction? C-CH3 H-NNH, KOH ?? OH NNH, C-CH CH.CH, C-CH NHNH, NHNH, (ci (d) b) (a)Q.2 a) Propose a mechanism for each of the following reactions. (10 Marks) i) K2CO3 HO- THE N- `NH2 i) ELOH/EtONa i) ii) CI ii) CH3COOH2. Label the following reactions as most likely occuring by an SN1 or SN2 mechanism. Explain your answer. (4 marks) HBr A) HO, CH;CH2OH 'Br B) Na* SCH; CH;CN ‚Br „SCH3
- What reagent(s) are suitable to carry out the conversion shown? OH an OA. 1.03; 2.1 equivalent of NaBH4/CH3OH OB.1. 03. 2. (CH3)2S: 3. H3O* OC.1.03; 2. (CH3)2S; 3. excess NaBH4/CH3OH A and B OB and C OH1) Predict the major products or substrates of the following reactions. If it is possible, write all stereoisomers. (10p) 1)Hg(OAc)2, THF, H20 (1) NaNH2 2) NaBH4, ОН (2)BzBr (3) H2/Li, ETNH2 b) HCI e) 1) O3 no peroxides 2) Zn/ACOH (1)OsO4 (2) NaHSO3, H208) After you examine the following chemical reactions tell me what needs to be changed to make the product shown. If the reaction will produce the ORGANIC product shown as it is (it is correct), just state "Correct" for an answer. You can ignore water as a product..... (15 pt.) A) CH3-CH₂-C-CH₂-CH3 + CH3-CH₂-OH H CH,CH,C—CH, O 2−CH2 – CH3 CH₂ CH3 OH B) + CH3CO NH,—CH,CH, CH,—C—NH—CH,—CH3 OH C) H* CH3-CH₂-OH + CH3-C CH,—C—o—CH,—CH, OH H₂O + O=C O=C