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- 7. Enols react as a. Electrophiles.....alkenes b. Electrophiles....alkanes c. Nucleophiles...alkenes d. Nucleophiles...alkanes in the same way that 8. Acylation of enolate ions proceeds by a a. E1 b. E2 C. SN1 d. SN2 c. Anhydride d. Beta-ketoacid | 9. The following molecule would be classified as a a. Alpha-ketoamide b. Beta-aldobase do. mechanism. HO4 Which involve large number of organic reaction donot which involve large number of small molecules called 8. involve and free radicals O A. Addition reaction. B. Substitution reaction. OC. Elimination reaction. O D. Pericyclic reaction O E. Rearrangement reaction. 9. monomers to from molecule high molecule weigh. A. Substitution reaction. B. Elimination reaction. C. Polymerization reaction. D. Pericyclic reaction.18. Which carbanion is the most stable A. methyl carbanion (CH3-) B. ethyl carbanion (CH3CH2-) C. isopropyl carbanion ((CH3)2CH-) D.Chloromethyl carbanion (CICH2-) 19. Which structural effect best explains the observed trend below: Compound C-CI bond length (A) 1.78 1.77 1.76 H3C-CI CIH₂C-CI Cl₂HC-CI FH₂C-CI 1.76 A. resonance B. C-H hyperconjugation C. Inductive effect D. steric effect 20. Assuming that each methyl/hydrogen 1,3-diaxial interaction destabilizes the methyl substituted cyclohexane by 0.9 kcal/mole; then what is the energy difference between 2 chair conformations of cis-1,3-dimethylcyclohexane. A. 0.9 kcal/mol B. 1.8 kcal/mol C. 2.7 kcal/mol D. 3.6 kcal/mol
- 4. structure and bonding) a. Draw the Lewis structure of l3-, including formal charges, and predict its shape. 4b. Draw and name a structural isomer and a stereoisomer of cis-3-hepane. 4c. Sketch the shapes of the o, and one of the T*2, molecular orbitals of O2. Use dashed lines to indicate nodes. 4d. The corresponding n*, molecular orbital of OF (OF is the more electronegative atom) has greater electron density on the: (circle answer) (i) O atom (ii) F atom (iii) equal electron density on O and F2. Predict the organic products. a. excess H2 Pd/C ethanol `NO2 b. 1) 1 equiv. THF Ph 2) 5% HCI с. SOCI2 toluene `CO,H heatReagents a. C6H5CHO b. NaOH, ethanol h. BrCH2CH=CH2 i. Na* OEt, ethanol j. Br2, H* k. K* t-BuO c. Pyrrolidine, cat. H* d. H2C=CHCN e. H3O* f. I. CH2(CO2ET)2 -CH2CH2CN LDA m. heat g. ELOC(=0)CO2ET Select reagents from the table to synthesize this compound from cyclopentanone. Enter the letters of the chosen reagents, in the order that you wish to use them, without spaces or punctuation (i.e. geda).
- 3.) HAI(CH,CH(CH3)2l2 (DIBAL-H) 1.) NBS 2.) NaCN 4.) H, H20 Thermodynamic Product Br a) 1.) b.) 1.) c.) 1.) Br Br 2) 2) 2) CN CN CN 3.) 3.) 3.) 4) 4) H. NH2Compound name is Toluene . Name the structures of all possible chemical (Electrophilic aromatic substitution) reactions of the compound namely; a. Halogenation (Chlorination or Bromination) b. Nitration c. Sulphonation d. Friedal Craft Alkylation e. FriedaDraw the structures of:a. (E)-1-bromo-2-methyl-2-buteneb. (Z)-3-isopropyl-2-heptene
- * Explain the chemical foundation:a. The addition of water and alcohol to alkenes is only possible under. Acid catalysis.b. Electrophilic addition reactions are not stereospecific (except in the case of X2 addition).c. Regioselectivity in the X2 addition reactions, even though carbocations are not formed in this mechanism.1. Fill in the boxes with the missing reagents or major organic products for the alkene reactions. a. HCl b. H2O, H2SO4 с. d. 1. ВН, 2. H2O2, NaOH е. f. CI .CI g. Cl2, H2O h. 1. Н-О, Hg(OАс)2 2. NaBH4, NaOH i. 1. O3 2. Н:0, H-02 j. OH HO.1. Optical isomers differ in:a. sign of their optical activityb. their structurec. sign and magnitude of their optical activityd. magnitude of their optical activitye. All of the above 2. Which compound contains an asymmetric carbon?a. n-butanol d. 2-methyl-1-butanolb. Isopropyl alcohol e. None of the abovec. 1-bromo-2-methyl-1-propene 3. Which of the compounds can exist as enantiomers?A. Isopropyl chlorideB. BromochloromethaneC. Sec-butyl chlorideD. 1-chloro-2methylpentane a. A and B b. B and D c. C and D d. B and C