Deactivating groups such as nitro (- NO2), carbonyl (-C=O), nitrile (-CN) but not including halogens (Cl, Br, I) promote electrophilic aromatic substitution at the position. Select one: a. ortho, para b. meta c. ortho, meta d. para e. ortho
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- MCQ 16: In SN2 mechanism 'S' stands for A. subordinate B. substitution C. sub-reaction D. systemic reactionWhich of (a)-(d) is not aromatic? а. O b. O c. Od.Many common pharmaceuticals contain aromatic rings and complex structures; they are readily synthesized through the common reactions that you have beem studying From the following table of available reagents, choose how you would convert OH OH (Enter the letter of the chosen reagent; only a single reagent is necessary for this step.) Reagents available a. epichlorohydrin, base f.H, A b. (CH,),CNH; g. PhMgBr then H,0 c. (CH, ), CHNH, h. BnMgBr then H,0* d. BnCl, pyridune LH. (CH,)2C=0 (Previous Ac,0 j.H, H,CO
- Classify the following species as electrophile, nucleophile or radical: a. b. C. d. H CI:- H- -N: H H-C +0. H H H C -0: H e. f. H- H- g. H- h. H H H HH EN: CI-AI- .ō H H CIArrange the following in increasing reactivity to electrophilic aromatic substitution. Me I. II. III. А. I,I,Ш В. П,ШІ С.П1,Ш, D. Ш, II, I46. Which of the following is the least reactive to electrophilic aromatic substitution?
- QUESTION 2 The preparation of a Wittig salt from an alky halide and triphenylphosphine proceeds by a(n) O A. E2 O B. Sn2 OC. E1 O D. free radical O E. Sn1 mechanism. QUESTION 3 Which resonance structure is more reactive as a nucleophile? Ph Ph O A. 1 O B. 2 OC. both are equally reactive Click Save and Submit to save and submit. Click Save All Answers to save all answers. o search F10 F1 F2 F3 F4 F5 F6 23 2 3 4. 7 8 W Y UIDBU Br DMSO, heat SN1 E1 SN2 E2 Strength of Nuc/Base Conc. Of Nu/Base Solvent Leaving group Reasoning:I Revie Starting with acetyl chloride, what neutral nucleophile would you use to make each of the following compounds? Part F H&C NO2 Draw the molecule on the canvas by choosing buttons from Atoms, and Advanced Template toolbars, including charges bond is active by default. (x) 2D EXP L. CONT ? +.
- 1. Consider the following reaction. CI EtOH OEt a. Provide a reasonable arrow-pushing mechanism for the following reaction, showing all steps and balancing all charges. b. Predict the stereochemistry of the final product(s). c. Label the electrophilic sites on the molecule and explain why only one of them undergoes substitution.C. How many of the following structures are allylic? D. How many are arylic? E. How many are benzylic?HO CI Br b. Fill in the reactants and reagents necessary to make each compound below. a. HO. abel Madc In U Synthesis. Give the reagents necessary for each step. A152 75 4167 Fisnerbran Iter Paper ualitative Cat. No.: 05 09-801A Porosity: Medium Flow Rate: Slow Dia.: 7.0 cm- Pk. of 100 cir Fisher Scientific