3. For the following reactions, label the reactants as electrophiles (E) or nucleophiles (N). (2 marks)...
1. Label your assigned reactants in these acid-base reactions as Lewis acids (electrophiles) or Lewis bases (nucleophiles). (a) CH,6: + CH –C: • CHO–CH, + C: (4) CH, NH, + CHỊ–CH2–Cl: • CH, NH–CH,CH, + : (h) CH=CH, + BF, BF;-CH, —CH,
20. 3 marks) Add charges to the following molecules where necessary c) CH3-N-H CH3H CH3 21. (2 marks) Label the reactants in these acid-base reactions as "LA" for Lewis Acids (electrophiles) or "LB" for Lewis Bases (nucleophiles). reactions. Used curved arrows to show the movement of electron pairs in the CH3-NH, CH-CH2-cl: CH-NH2-CH2-CH3 + --+ + :C1: Cl: -
9. Which of the following statements is FALSE of electrophiles and nucleophiles? A) Anionic molecules tend to be nuclophiles, and cationic molecules tend to be electrophiles B) It is possible for the same molecule to act as an electrophile in some reactions, and a nucleophile in other reactions C) Carbocations are very strong electrophiles D) It is possible for a weak nuclophile to participate in a reaction E) Typically, a double headed curved arrow will move towards a nucleophile 10....
2. (1.5 pts) Label the following reagents as Good or Poor Nucleophiles AND as Strong or Weak Bases. OK Na SH 3. (1.5 pt) Predict the productts) of the following reactions, if there are multiple products indicate which, if any, is the major product. Be sure to clearly mark the stereochemistry of chiral carbon atoms and draw multiple products if there is more than one stereoisomer that forms. HCI MeOH H2SO H2 Pd/BaSO4 quinoline 4. (3 pt) For the following...
reactants are in second picture! circled Label your assigned reactants in these acid-base reactions as Lewis acids (electrophiles) or Lewis bases (nucleophiles) 2. The following compound can become protonated on any of the three N atoms. However, one of the N is much more basic than the others. a. Draw the molecule with all three N protonated and then draw resonance structures for this protonated molecule. NH CH-NH-C NH b. For each resonance structure, give the formal charges on each...
2 Ws 1. For each of the following SN2 reactions, (i) draw the chemical reaction (reactants and products) (ii) show the proper mechanism (iii) draw the transition states a. (S)-2-chlorobutane and NaSH b. (R)-3-iodohexane and NaOH c. (R)-2-bromohexane and NaCN d. 1-bromocycloheptane and NaOH e. Ethyl iodide and sodium actate (CH:CO2Na) Br NaOH Na o NaOH Br NaCN DMF ONA 1,2-dibromoethane Nao
(1.5 pts) Label the following reagents as Good or Poor Nucleophiles AND as Strong or Weak Bases. 2. (1.5 pts) Label the following reagents as Good or Poor Nucleophiles AND as Strong or Weak Bases. - con nom man yly or non o Å 3. (1.5 pt) Predict the product(s) of the following reactions. If there are multiple products indicate which, if any, is the major product. Be sure to clearly mark the stereochemistry of chiral carbon atoms and draw...
9.44 (•) Determine whether the following reactions are redox reactions. If they are, identify whether the molecule has been oxidized or reduced. (a) (b) ý modo de volg Br2, heat + HO og sm. .- Br + H-Br (c) H2SO4 t o H2SO4 , .- CH3 NaBHA CH2OH OH OH - OH .PY OH + BH3 o-Na 9.45 (•) Predict the product(s) that would result when the alkenes are allowed to react under the following conditions: i) Bra; ii) Cl2;...
3. Identify which reactants are amphoteric species in the following reactions. For those species, determine if the compound is also amphiprotic. Reaction Amphoteric Reactant Amphiprotic? (Y or N) HCO3 + HBr = H2CO3 + Br- 3 HCI + Al(OH)3 = AlCl3 + 3 H2O 2 HBr + ZnO = ZnBr2 + H2O
2. Each of the proposed reactions below features a mistake in starting structure structures, reaction conditions or product structures. Circle the mistake and provide correction. (3 pts) 2. Each of the proposed reactions below features a mistake in starting structure structures, reaction conditions or product structures. Circle the mistake and provide correction. (3 pts) a. Focus on SN 2: NaOH V Br - HOVOH + NaBr H2O b. Focus on Sn2: focus on NZ: `Br NASCHz CH3OH - schz +...