Examine the following synthesis and choose which heterocyclic ring it would be expected to make from the choices below. ii Opyridine Opyrimidine O pyrazine O pyrrole O imidazole H₂N NH
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- A compound (C3H,NO) gives the following NMR data. In the box below please draw the structure of the compound. 'H-NMR: 2.06 ppm, s(3H); 7.01 ppm, t(1H); 7.30 ppm, m(2H); 7.59 ppm, d(2H); 9.90 ppm, s(1H) 13C-NMR: 168.14; 139.24; 128.511; 122.834; 118.90; 23.93 • You do not have to consider stereochemistry. You do not have to explicitly draw H atoms. Do not include lone pairs in your answer. They will not be considered in the grading.For following substituted benzenes: [1] C6H5Br; [2] C6H5CN; [3] C6H5OCOCH3: Does the substituent activate or deactivate the benzene ring inelectrophilic aromatic substitution?Rank the compounds in order of decreasing reactivity towards electrophilic aromatic substitution. HOOC -COOH H₂C Most reactive Least reactive Answer Bank -CH3 H3C- -COOH
- 18) The following reaction undergoes three distinct steps: imine formation, electrophilic aromatic substitution, and decarboxylation. Draw each of the intermediates from each of these three steps as well as the final product. BS NH₂ OH heat22) NM₂2 in N,N-dimethylaniline ( is ortho-para director but it gives meta product in reaction with one of the following reagents. Identify the reagent. a) Br₂ b) c) HNO3 H₂SO4 O اتMustard gas, Cl¬CH2CH2¬S¬CH2CH2¬Cl, was used as a poisonous chemical agentin World War I. Mustard gas is much more toxic than a typical primary alkyl chloride. Itstoxicity stems from its ability to alkylate amino groups on important metabolic enzymes,rendering the enzymes inactive.(a) Propose a mechanism to explain why mustard gas is an exceptionally potent alkylatingagent
- The hemiacetal product of the following reaction is он OH он он он 333333Reductive amination is one of the best methods to prepare amines. However, direct alkylation with alkyl halides can be used to synthesize substituted amines. Can you identify potential problem(s) when alkylating agents are used?Predict the product based on the following data: H-NMR: 0.93 ppm (3H, triplet); 1.57 ppm (2H, multiplet – looks like “pentet”); 2.14 ppm (3H,singlet), 2.26ppm (2H, triplet); 3.42 ppm (1H, triplet); 4.83 ppm (1H, multiplet) Weight of product: 156 g/mol IR: Two sharp peaks at 1784 cm-1 and 1742 cm-1 C-NMR: 9.9 ppm; 29.0 ppm; 29.8 ppm; 31.8 ppm; 52.9 ppm; 76.1 ppm; 181.1 ppm; 200.2 ppm
- Draw and explain the reaction mechanism for the following reaction: cycloheptylamine + chloropropane ---> N-PropylcycloheptanamineAssign a structure based on the following formula and 'H NMR. C4H100 |3H ЗН 2H 1H 1H PPMgas, Cl¬CH2CH2¬S¬CH2CH2¬Cl, was used as a poisonous chemical agentin World War I. Mustard gas is much more toxic than a typical primary alkyl chloride. Itstoxicity stems from its ability to alkylate amino groups on important metabolic enzymes,rendering the enzymes inactive.(a) Propose a mechanism to explain why mustard gas is an exceptionally potent alkylatingagent.(b) Bleach (sodium hypochlorite, NaOCl, a strong oxidizing agent) neutralizes and inactivates mustard gas. Bleach is also effective on organic stains because it oxidizes coloredcompounds to colorless compounds. Propose products that might be formed by thereaction of mustard gas with bleach.