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MULTIPLE CHOICE A NaOET ii RT B Oө NaOEt RT с LDA -78°C D NaOEt RT...
which or the following reactions show the incorrect enolate formation? NaOEt RT 0 NaOEt RT O LDA -78°C NaOEt RT E All are correct
OH LDA - в THF, -78 °C (a) There are four possible sites of deprotonation on compound A. Re-draw compound A, indicating each of these sites with an asterisk. (2] (b) Under these conditions, deprotonation with LDA gives the kinetic lithium enolate B. Give a curly arrow mechanism for the formation of B. [2] (c) Draw a curly arrow mechanism for the intramolecular aldol reaction of enolate B to give product C. [3] (d) Draw a curly arrow mechanism for...
23 12 15 10 15 5 1st Choice А D C с B D 2nd Choice B A D D D А 3rd Choice C С A B А C 4th choice D B B А С B Using the plurality with elimination method, which of the following situations would result in winning the election in round two? Select the correct answer below: OC, after receiving 20 additional first choice votes with no other additional votes given None of these...
MULTIPLE CHOICE Which alpha proton in the molecule below is the most acidic? dc toiteli Zoom А D С D 1 of 15 > > MULTIPLE CHOICE All of the compounds shown below have an enol tautomer. Which compound's enol exists in the highest percentage enol form? Q Zoom он Х. 0 а b с р
Select the major product of the following reaction scheme: Reaction CH3 H3C OH LDA NaOET CrO2, H2SO4 Acetone, 0 °C THF -78 °C -78 °C to EtOH, 78 °C 25 °C НО. B E F OH (No Reaction) ol. A o II. B ollc IV.D OV. E OVI.F
True or False : 14 of 15 FINISH QULZ TRUE FALSE 1) This scheme shows the correct transformation (reactant to product) when conducting the reaction shown 3) NOME MO 5) LDATEC, THE SPRCH, Q Zoom 1) NaOme 2) Х Br Br Ph 3) NaOme 4) H/H20, A 5) LDA, -78°C, THE 6) PhCH2B1 MULTIPLE CHOICE . O idiool Select the reaction arrow that best represents the following reaction. Zoom А A B B С . Oil.coé s a b с...
Answer choices for first question: True or False? NOM 2) This scheme shows the correct transformation (reactant to product) when conducting the reaction shown. 3) NOM 4. SILDA TO THE PRCH Q Zoom 1) NaO Me X 2) Br Br 0 O O Ph 3) NaOme 4) H*/H20, A 5) LDA, -78°C, THE 6) PhCH2Br MULTIPLE CHOICE What set of reactions are necessary to carry out the following transformation? the Netherworp Phchen How Now B 1.NO Powe we PH D...
can someone do #10 and 12, please! HBP, H20 then LDA (B) HBr,H,Oz then LDA (D) Bra, light then Nadet (C) HBr,H,O, then NaOet (E) Hz, Pt then Mg, ether (F) none of the above 10. Which of the following is the major product of the following reaction? Anti 11. Which of the following is the major product of the reaction? $---B-228. D-803 12. Which conditions would be the best choice for the following conversion? no rear ♡ ? ollte...
3.-7. What is the major product of the following reactions? Answers may be repeated. LDA CHI 3. а. -78°C LDA 4. b. (CH) SiC LDA 5. ZnCl CHы. но 6 d. NaOCH, CH, NaOHH"А excess 7. e. not a.-d. un
Ch.22 Reactions at the a-carbon Due: Wednesday, November 6 at the beginning of class Multiple Choice Section (0.5 pt each) 1. (Review) What functional group would the following reaction produce? 4. What is the most acidic hydrogen in the following compound? BC CH,CH,OH H₂o (a) A (b) B CI pyridine HI H D (c) C (d) D (b) ester AH (a) amide (c) anhydride (d) ketone 2. What would be the product of the reaction sequence shown below? 5. (Review)...