Choose the most stable intermediate in the nucleophilic substitution aromatic (SNAR) reaction of NaOCH, with p-nitrophenylchoride. I H3CO Il H¿CO, CI NO2 A) I NO2 B) I| CI III H3CO IV H3CO, C) II CI NO2 D) IV NO2
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- 1. .CI HC C: Li HC CH LICI 2. -CH3 OH Aqueous HO-S- -CH3 acetone g = SN1 Nucleophilic substitution Electrophilic a = Proton transfer addition h = SN2 Nucleophilic substitution b = Lewis acid/base e = El Elimination c = Radical chain f= E2 Elimination substitution Identify the mechanism by which each of the reactions above proceeds from the mechanisms listed. Use the letters a - i for your answers. among 1. 2.Which synthetic route(s) would complete the reaction shown? Br || ||| I and II O I and III ? HO OH + enantiomer Synthesis I: 1. NaCCCH3; 2. Na/NH3(I) ;3. OsO4; 4. NaHSO3, H₂O Synthesis II: 2. NaCCCH3; 2. H2, Lindlar's catalyst; 3. MCPBA; 4. aq. H₂SO4 Synthesis III: 1. NaCCCH3; 2. H₂, Pt; 3. MCPBA; 4. aq. H₂SO4TReferences] Indicate, by letter(s), the position(s) on the ring at which substitution occurs when the aromatic compounds shown undergo bromination with Br, FeBr3 (when necessary). .H CN HO
- The following presented reaction scheme lead to the synthesis of which major product from benzene, assuming separation of products is possible? so, 1. Na OH Cl2 Product Product HSO, 2. H,0* FeCl3 O A. Meta-Chlorophenol O B. para-ChloroSulfenic acid OC. Para-Chlorophenol O D. Meta-chloroanilinecan you explain how can we determine major and minor product from these reaction elimination-addition? &=&=1561=6, NH₂ majo CH, NH₂ NH₂ &=-&-&-& majo CH3 OCH, CI NINH, NH 3liq. KNH₂ NH309. Br ΚΝΗ, NH CI CH₁ 80 80 OCH, majo NH, NH₂ mino CH3 mino NH₂ NH₂ NH, NH, CI majo CH3 majo NH₂ NH₂5. Draw the organic products formed in the following reactions. az vo 2169 snol mo 40-60 g a. b. N [1] LIAIH4 [2] H₂O odior hobnod noitibbs, ogrob [1] Mg Br [2] Å quore [3] H3O+ C. O OH Isprie [1] TBDMS-Cl, imidazole [2] CH3Li [3] H₂O [Indicate stereochemistry.] quong griynol is dit bruggmos lynddisa vesi tuontiv d. of enousNaBH42 OCH3 CH3OH
- 6. Complete reaction scheme below indicating reagents, catalysts and conditions, and side product trigil bezinslog si6101fon 290b 1l (b Senines levirba 6 gaubong nasamots gniwollot ads to doinW 01 sniowl (6 CH3 40 CH3 Scansgowi (d Ege nodie) ( nsgyxo (b NO₂ 19m02 2i gniwollet sits to mainW II HOIdentify the major product of the reaction of an alkene shown below. ||| 1. Hg(OAc)2, H2O 2. NaBH4, NaOH ....... ОН || IV ОН о, ОНWrite out the expected splitting pattern for hydrogens Ha, Hp and Hc 3Jab = 10 Hz На Hb 3Jpc = 7 Hz CI Hc Hc Ha:Hb:Hc: doublet, quartet, doublet Ha:Hb:Hc: quartet, quartet, triplet Ha:Hb:Hc: doublet, doublet of triplets, doublet Ha:Hb:Hc: doublet, triplet of doublets, doublet
- 6. Provide the missing reagent(s) that gives the desired product in high yield. POMOL 129 129 16m2 sn RCH₂CH₂ ? CH₂CH₂R 20112⁰ D">OH H₂CO-D H H A) NaOCH3 B) 1. TsCl/Base; 2. NaOCH3 C) 1. NaH; 2. CH3I D) 1. CH3COCI/Base; 2. NaOCH319 Ⓒ) (Care.) 50.3 /H₂ SO4( Oxer) .... ? ← defeck 1₂.0+ / heat B 1 which of the following hatides will not work as electrophile in a Friedel - crafts altylation reaction ? Br Br (1) 1 # Br Jor T TE NWhich set of reagents would be appropriate to synthesize bromobenzene from benzene? O 1. HNO3 in H2SO4; 2. H2CrO4 and heat O 1. H2CrO4 and heat; 2. H2 Pd/C O Br2 and FeBr3 O 1. CH3CH2CHCI and AICI3; 2. H2CRO4 and heat O4B12 and Fe O Heat and Br2 OBR2, HCI