16. What type of reaction is this? + HO acid OH + H₂O A. an electrophilic addition B. a nucleophilic substitution C. a Friedel Crafts acylation D. a Friedel Crafts alkylation E. a Diels Alder cycloaddition
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- Which is a better nucleophile? a. Br− or Cl− in H2O b. Br− or Cl− in DMSO c. CH3O− or CH3OH in H2O d. CH3O− or CH3OH in DMSO e. HO− or −NH2 in H2O f. HO− or −NH2 in DMSO g. I− or Br− in H2O h. I− or Br− in DMSOA reaction flask contains 2-bromopentane in an ethanolic solution of sodium ethoxide at room temperature and result in the formation of two olefnic products. What is responsible for the formation of major and minor products. A. Different activated complex involved in the mechanism. B. Bimolecular nucleophilic substitution reaction. C. Bimolecular elimination reaction D. The presence of sodium ethoxide. E. The hybridization nature of secondary carbocationIdentify the nucleophile and leaving group and draw the products of each substitution reaction.
- Draw the products of each nucleophilic substitution reaction.Rank the species in each group in order of increasing nucleophilicity. a. CH,, "OH, "NH2 b. H20, OH, "SH in CH3OH c. CH,CH2S", CH;CH2O¯, CH;COO" in CH3OH d. CH3NH2, CH3SH, CH;OH in acetone e. "OH, F", CI" in acetone f. HS, F", CI in CH3OH27. Which is the expected product for the reaction of propyne with excess HBr?. A. 1-bromopropane B. 2-bromopane C. 2,2-dibromopropane D. 1,1-dibromopropane 28. The following compounds undergo electrophilic aromatic substitution EXCEPT I. A. I and II B. III and IV C. II and III D. III II. III. IV.
- 1. Nucleophilic addition involving H, CO 2. Nucleophile elimination ?Classify each transformation as substitution, elimination, or addition. Br а. OH b. С. CI d. HO.Circle the electrophilic addition reaction(s) that form(s) a three-membered ring intermediate. a. Addition of hydrogen halides b. Acid-catalyzed addition of water c. Acid-catalyzed addition of alcohols d. Hydroboration-oxidation e. Addition of a halogen f. Addition of a peroxyacid g. Ozonołysis of alkenes h. Addition of hvdrogen
- Please explain step by stepAddition of HCl to alkene X forms two alkyl halides Y and Z.a.Label Y and Z as a 1,2-addition product or a 1,4-addition product. b. Label Y and Z as the kinetic or thermodynamic product and explain why. c.Explain why addition of HCl occurs at the indicated C=C (called an exocyclic double bond), rather than the other C=C (called an endocyclic double bond).Which one will not undergo a reaction involving an electrophilic addition?