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2. a) Provide complete mechanisms for the following transformations: OH Но- reflux Н,о OH reflux b) Explain why the...
Predict the major product in each of the following transformations. No mechanisms are required for this question. [3 Marks] 1. CH3CH2MgBr (excess) 2. HCl(aq) 1. PhMgBr (1 equiv.) 2. HCl(aq) ОН о но 1. CH3MgBr (2 equiv.) 2. HCl(aq) н Show how you could synthesize the products below using a Grignard reagent and appropriate electrophile by drawing the overall balanced equation. No mechanisms are required for this question. You do not need to show formation of the Grignard reagent. [2...
Chemistry 12A Substitution and Elimination Reactions 1. Provide complete curved-arrow mechanisms for the following transformations, Label the overall mechanism as: E1, E2, S,2, or Sy1 and explain in 1 sentence WHY that mechanism is favored. Br OH OH Br кови Hао Br "ОН conc. H2SO4 "Он
Provide reagents and/or starting materials to accomplish the following transformations. но OH -Сс—снз Cна CH3 CH3 Cнз CHа OCH3 OH Нас OH "CHз any alkene
Write an arrow formalism mechanism for the following reaction. Explain why 1 is formed, but 2 is not. Он Н,о Н.о OH Be sure to give us two reasons why the OH winds up adjacent to the ring and not on the other carbon of the starting allkene. он H3O* Н.о 2
CHE 310 Homework #8 Due WED NOV 6 2. REAGENTS: Provide the reagents needed to accomplish the following transformations. Clearly indicate if you need to use more than one step. (12 pts.) 3. MECHANISMS: Provide complete, arrow-pushing mechanisms for each of the reactions shown below. Only TWO of these will be graded but YOU MUST COMPLETE ALL FOUR TO EARN ANY CREDIT! (8 pts.) но Cl2 HCI Нао (note: only mechanism for step 1) он 1. Hg(OAc)2, CH,OH осн, Н-о...
Part II, Provide clear complete mechanisms that explain the following transformations. 1. Ho* 2. soci2 C 1. H2NNH2 2. KOH, H2O 1 eqv Meo 3. Methylamine art IV.Pair up the following meta-substituted benzoic acids that you would expect to have the
3. (a) Provide appropriate starting materials to complete the following reactions. но 1. BH3 2. NaOH, H2O2 (+ diastereomer) Но * 1. NaCN O H NO (b) Add suitable reagents to complete each reaction. Mcchanisms are not required. SHOS но Но (racemic) HO (racemic)
Provide the product for the following reaction І. Br HOCH,CH,OH Mg/ether H2SO, Н,0° 2. H,0 но он ОН он IV он у Predict the product of the following synthesis. 1. Br2, H20 2. NaOH, HO 3. CH2OH, H+ OCH, н,со OCH, A B с OCH OCH OCH, D E Predict the product for the following reaction. OH Acid Catalyst + 25 °C O А D с B
5.59 Provide the products and balance the following reac tion for the complete combustion of pentane, C;H12 Identify the reactant that is oxidized and the reactant 5.65 that is reduced. CsH12) 02() 5.60 Provide the products and balance the following reac- tion for the complete combustion of the fatty acid octanoic acid, C H1602. Identify the reactant that is oxidized and the reactant that is reduced. CgH1602(s) O2 (g) 5.62 Identify the reactant that is oxidized and the reactant that...
он о Br Me 2 4. (-)-Hamigeran B (structure shown at right) is a marine natural product isolated from the sponge Hamigera tarangaensis. It exhibits near-complete inhibition of both the herpes and polio viruses, albeit with some significant toxicity problems in vivo The following pathway shows a multistep synthesis that was used to access a precursor to hamigeran B Provide the missing intermediates, reagents, or major organic product in each box provided. You do not need to show any curved-arrow...