Rank the following nucleophiles in order of decreasing reactivity i.e. most reactive to least reactive in methanol: -CN (1), -SH (2), -OH (3) 2,3,1 1,2,3 O3,2,1 2,1,3 Question 2 Rank the following nucleophiles in order of increasing reactivity i.e. least reactive to most reactive in DMF: -CN (1), -SH (2), -OH (3) 2,3,1 1,3,2 3,2,1 2,1,3
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- 1. .CI HC C: Li HC CH LICI 2. -CH3 OH Aqueous HO-S- -CH3 acetone g = SN1 Nucleophilic substitution Electrophilic a = Proton transfer addition h = SN2 Nucleophilic substitution b = Lewis acid/base e = El Elimination c = Radical chain f= E2 Elimination substitution Identify the mechanism by which each of the reactions above proceeds from the mechanisms listed. Use the letters a - i for your answers. among 1. 2.Below is the equation for a nucleophilic substitution reaction and some experimental data. CH3CH2Br + CH3COO- ⇌ CH3CH2CO2CH3 + Br- Rate = k [CH3CH2Br][CH3COO-] Which mechanism would best fit the data?c. Snl reactions dominate under polar protic solvents. Increasing the polarity of the solvent will increase the rate of the reaction because the polar solvent will stabilize the dispersed charges on the transition state more than it will stabilize the neutral reactant. Label areas of ô* and & on the molecules of the transition state of the SN1 reaction below: Me Me Ме Me Me H20 Br -Br OH + НО \'H Et Et RDS Et H Et Et transition state not isolable carbocation intermediate not isolable
- Arrange the following alkyl bromides in order of INCREASING reactivity towards SN2 reaction. I. 1-Bromohexane II. 1-Bromo-2,2-dimethylbutane II. 1-Bromo-2-methylpentane IV. 1-Bromo-3-methylpentane III < || < IVH3C-C O: H ethanal :CN: and the electrophile is cyanide ion In the step you have just written, the nucleophile is slow rate-determining Ö—0—1 H3C-C-C=N; adduct7:25 ul LTE O Home Edit Today 7:24 PM 3) What is a nucleophile? Provide some examples of nucleophiles that would work well in the SN2 reaction.T Rubric.pptx R Quiz #2, Due on March 11, 2023. 50 Points. 10 points each. Chapter 9, 10 and 11. 1- Show with examples and structures the Order of Reactivity in SN2. 2- Show Some SN2 Reactions With Bromo-Ethane. Give 9 examples of Nucleophiles Nu-. 3- Rank the following compounds in order of their expected reactivity toward SN2 reaction: CH,Br, CH3OTOs, (CH3)2CHCI 4- Show with examples for the Influence of Solvents in the S2 Reaction. 5- Show the mechanism of the SN1 Reaction with the proper directions of the arrows. 5 6 Y 7 U ASUS VivoBook 8 19 home 93. Photo-induced dissociation of 1,2-diiodoethane to ethene I, + hv >2I·; 2 21.+wall →surface-bound I, ; C,H,I, +I-- >C,H̟I·+I, ; >C,H, +I•. 3 4 C,H,I- a) What stage of the radical chain corresponds to these reactions: initiation, termination, or propagation? b) Find the rate of consumption of I2, and the rate of production of ethene. Assume that all radical species are very reactive. How would you define the length of the radical chain? c) How much will the rate of ethene production change if the gas pressure is increased twice? If the light intensity is increased twice? How will this rate change qualitatively if you add to the mixture an aerosol of the same material from which the wall is made? d) Let the initial concentration of I2 be significantly lower than that of C2H4I2, so that for the initial period of the reaction [C2H4I2] can be assumed constant. Integrate the production rate of I2 to find [I2](t). Sketch your solution.C. Rank the following in order of increasing nucleophlicity. (1 = least nucleophilic, 5 = most nucleophilic) 요 навучат повече новую новую прове H3C O Na O Na F3C SK ОН1. 2. -CH3 1. tom 2. OH + aqueous H₂SO4 a Proton transfer = b = Lewis acid/base c = Radical chain substitution HBr OH CH3 ti Br d = Radical chain addition e = Electrophilic addition f = E1 Elimination Identify the mechanism by which each of the reactions above proceeds from among the mechanisms listed. Use the letters a - i for your answers. g = E2 Elimination h = SN1 Nucleophilic substitution i = SN2 Nucleophilic substitution19 Ⓒ) (Care.) 50.3 /H₂ SO4( Oxer) .... ? ← defeck 1₂.0+ / heat B 1 which of the following hatides will not work as electrophile in a Friedel - crafts altylation reaction ? Br Br (1) 1 # Br Jor T TE NCH3 CH, Co H;C-C-0 C SN2 CH3 CH3 alkyl halide The mechanism of this reaction is SN (Sy2 or Sy1?). Explanation: NucleophileSEE MORE QUESTIONS