(i) Suggest structures for the reagents and products in the boxes labelled A to Hin the reaction scheme below.1/202CA + 2B"BuLi(-LICI)F (-butane)PhNMe2(-butane)HD+E (+butane)|Ph--LiG+ LiBrtBu"BuMg-BrtBu(ii) Products D and E are formed in competing reactions. Suggest an alternativereagent to "BuLi that may favour formation of product E. Briefly explain yourreasoning.

Answered: (i) Suggest structures for the reagents…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Page of 11 ZOOM + Section A (continued) A18. Give suitable nucleophiles (1 and 2) for the following organic reactions: 1 2 H3C H3C OMe H3C 1 = MEOH; 2 = NH3 1 = H2O; 2 = NH2ET 1 = NaOMe; 2 = NH2ME 1 = MEOH; 2 = NH2ET %3D %3D В %3D %3D A19. How would you categorize the atoms labelled in the figure below? H2N CH3 Atom B Atom A Both atom A and atom B are electrophilic Atom A is nucleophilic; Atom B is electrophilic Both atom A and atom B are nucleophilic Atom A is electrophilic; Atom B is nucleophilic A B A20. Rank the following acids from highest to lowest pKa. CI CI F CH3 Но HO CI HỌ Но CI A C D А A>D>B> C C>D>B>A C A >B> D> C C > B >D> A 明 ABC
a) Complete the following reactions: (i) H3C-C-Ci + H2O A + B (ii) HO H;C. CH3 SOCI, с + D + so, (iii) H;O* HCN E F CH;CH, `CH;3 (iv) CH;CH,CH,CH,CH,Br + NH3 G + H excess
Identify the reagent used in the following transformation: OH P Q HO HO P = LIAIH, Q = KMNO, Q = MnO, / CH,Cl, Q = Ag,CO, on celite, PhH (A) (B) P= NABH, /MeOH %3D (C) P=CeCl,.7H,O (D) P= NABH, /CeCl,.7H,0 , / CeCly.7H,O Q = MnO, / CH,Cl,
Q.2) A.) Write down what the products a, b, c, D, e, F, G, H, i, J and K are in the following reactions. LDA CH;-I 0°C + SOCI; NH,CH,CH,NH, Ag0. NAOH HO. A H,0 LIAIH, H;0 CH,CHCN H Eter Raney Ni HSCH,CH,SH B.) Write down the reduction reaction of each molecule using appropriate reagents, sorting the compounds given below according to their ease of reduction. CH3 но CH CH,0 -CHs C.) Obtain oxidation reduction products in four different ways using benzaldehyde and appropriate reagents and reactions.
2) Write the major products A- P for each of the following reactions. (70 point) HBr CH,CH,OK* CH;CH,OH t-BuO'K a) Br t-BUOH Br,/ H20 F Br KMNO/ OH Zn 1) 0, 2) Zn/ CH;COOH b) Br NANH, CH,CH,I H. Li NH; -78°C d) A concd. H,SO, L. H,O/ H Br, CCl, excess NaNH, hear NH,
2. In the following equations, there is only one base and two acids, or one acid and two bases, in the reactants. Predict the direction of equilibrium and explain your answer. Drawing structures may help! (a) (Ph);PAUCI + CH;CN P(Ph)3 + CH;CNAUC1 (b) SO2 + (C6H5)3PHOC(CH;)3 (CHs)3PSO2 + HOC(CH3)3
1:4 (vv) piperidine/DMF CF,CO2H Y CH,Cl2 NH H2N. H2N H,N. NH NH2 NH3 NH2 + II II IV Consider the reaction scheme given above. What are products 'X' and 'Y'? O X = II; Y = IV O X = IV; Y = || O X = II; Y = II O X= 1; Y = II
d) Calculate the atom economy for Ethylene Oxide (CH2CH;O) preparation CH;=CH2 + Cl2 +H2O CICH,CH2OH + HCl (Step 1) CICH2CH2OH+ Ca(OH)2 CH2CH2O + CaCl2 + H2O (Step 2),
tes (18) ades Chemistry: Q4: 2022-23 | e 4.4Be + 2He→ 6C+ Ⓒin O On O in 9 Sie le
Identify the reagent used in the following transformation: OH P Q HO OH HO (A) P = LIAIH, Q = KMNO4 Q = MnO, / CH,Cl, Q= Ag,CO, on celite, PhH %3D (В) P= NABH, /MeOH %3D (C) P=CeCl,.7H,O (D) P= NABH, /CeCl,.7H,0 , / CeCl,.7H,O Q = MnO, / CH,Cl,
(c) (d) Н (e) НО HO ОН н Na₂Cr₂O7 H2SO4, H2O 1. LiAIH4 2. H2O workup 3. PCC 4. (Ph)3PCH2 OH H2SO4 (catalytic)
(a) MeMgBr (excess) H3O* workup (b) CN NaOH 0 °C (e) Ph. (d) H,O* (cat.) OH Он (e) MeMgBr (excess) HO D,O* workup Predict the product(s) of the following reactions. If you expect no reaction to occur, then you may write “no reaction."

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