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- 6. Propose the key transition structure that accounts for the stereoselectivity observed in the following reaction. Ph SPh OCH 3 LiB (Et) 3H Ph OH OCH 3 SPh 92:8 favoring syn> College Of Agr, Eng & Science > School Of Chemistry & Physics > Westville > 2021 yTests and Quizzes > Organic Summative Test 2 30 September 2021 For the reaction of ethylchloride with sodium hydroxide via the SN2 mechanism, we get inversion of configuration because NAOH CH;CH2CI: Select one: O a. the reaction occurs in two steps with the formation of a transition state complex. O b. the leaving group leaves which allows the nucleophile to attack the alkyl halide. Oc. the leaving group leaves to form a transition state complex which favours inversion of configuration. o d. the nucleophile attacks the alkyl halide from the opposite side of the leaving group whilst the leaving group is attached. Clear my choice Next page & 8 R0 a +H=BC: Where are the curved arrow poshing mechanism as well as the non-bonding electrons. What are the initiation and progation Steps? •What are the two termination Steps for the reaction. B. с A. В. C. D. Brz HV - + • Br: → H-Br: + → + • Br: H-Br: + H + • Br: → H-BC: + •Where are the curved arrows pushing the reaction with bromine atom? What are the radical product including the resonance contributors • Rane the reaction in order of increasing rate. what is the explanation that includes the term Hammond Poštutate? H2 PJ/C HBI Br: 1.BH 3. THE 2. NaOHV/H₂O₂ Bcz (2) hu x 1. What are the major organic productes) of the reaction. Include all Stereochemistry and identify any meso compounds. E.. все hu 2. Would the solution of the products be optically active of not active. what would be the Ceason for the choice?
- Provide the products and detailed arrow pushing mechanisms for the following reactions: OSIME3 EtN CO.Me 1. base, dilute solution (10mM) 2. NaOH/MEOH-H,0 Acid, heat CO.Meintermediates/products for this reaction Supply the missing . Please Show all 24.49. arrow pushimed Méchansmsi Mg(s). 1.8 Br2 Na,Cr,0z H2SO, SOCI, A B FeBr3 2. H300 AICI, Thanto ga! OCH3 Conc. H3PO4 → G OCH3 H. NABH4. ELOH A"L) 13. Write the complete mechanism for the reaction shown below. Include formation of the nitronium ion and important resonance structures for the sigma complex intermediate (assume mononitration occurs) HNO3, H₂SO4
- 7. 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 CHOAdd any remaining curved arrow(s) to draw step 2 of the mechanism. Modify the given drawing of the product as needed show the intermediate that is formed in this step (a sigma complex), Use the +/tools to add/remove charges, and use the bond tool to interconvert between double and single bonds. 1+1+1+ZNI NN 95 3 CX X ② ㉢ 아아 4 H C Br 1 FProvide the mechanism for the following: A) Lou 1. BR, PBr; Br. 2. H,0º HO- 1 Cle, NaOH 2. H;0º B. ph I HO Bl2 C) ph Br
- V Add one curved arrow to draw the next step of the mechanism. Modify the given drawing of the product as needed to show the intermediate that is formed in this step (a sigma complex). Use the +/- tools to add/remove charges, and use the single bond tool to interconvert between double and single bonds. IN Z + + + +1 02CX e o 26-å CH3 Ö: CH3 1 H Z O C P S F CI BrV Add one curved arrow to draw the next step of the mechanism. Modify the given drawing of the product as needed to show the intermediate that is formed in this step (a sigma complex). Use the +/- tools to add/remove charges, and use the single bond tool to interconvert between double and single bonds. IN Z + + + +1 02CX e o soặc CH3 Ö: CH3 1 H Z O C P S F CI BrBu Br ML. से 1) 1.05 nBuLi 2) A) -78 30 min MeOH B-78 to RT for 1h; MeOH e Bu H what would be the mechanism/interaction between the n-Butyllithium and the starting material to get to the product? Please explain step by step.