During the bromination reaction of stilbene, what reactive intermeidate is formed? O carbocation O benzyl radical bromine radical bromonium cation benzyl anion
Q: o electrophilic aromatic substitution
A: Electrophilic substitution reaction may be defined as the reaction in which electrophile is…
Q: what organic reaction can i use to add a cyclobutane to the indicated carbon?
A: Benzylic position in which the carbon adjacent to the benzene ring. The hydrogen attached to the…
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Q: Which is least reactive in electrophilic aromatic substitution? (A) (B) CH3 (C) CHO (D) C3
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Q: Draw the products that result from the following bimolecular nucleophilic substitution (SN2) step.…
A: In nucleophilic substitution reaction nucleophile attacks on electrophilic center of substrate it…
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A: The products of reaction 4 are shown below,
Q: Which of the following is the best leaving group in a nucleophilic aromatic substitution reaction? O…
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Q: Draw the products of homolysis or heterolysis of each indicated bond. Use electronegativity…
A: Figure 1: The products of homolysis of the indicated bond is given as follows: In the above…
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Q: Br
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Q: Nucleophilic substitution bimolecular mechanism will| proceed through the formation of: O…
A: Answer: option c) Transition state
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Q: Which of the following correctly represents a nucleophilic attack? :o: :CN ö: : :CN ..O :
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Q: Fluoxetine synthesis from Michael Addition reaction
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Q: ) Label each of the following using N for nucleophile and E for electrophile. он H+ NH2 BH3 H2O B'
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Q: Dr@w a carbene and explain how it can function as a nucleophile or electrophile.
A: The solution is given below -
Q: HO
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Q: CH3OH H2SO4
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Q: Identify the nucleophile and leaving group and draw the products of attached substitution reaction.
A: NaCN is strong base which dissociates to form Na+ and CN-.
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Q: ?Which of the following is not a nucleophile اخترأحد الخيارات a. CH30CH3 b. NH3 C. FeBr3
A: To determine which of the following is not a nucleophile. CH3OCH3 NH3 FeBr3 Br-
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Q: In addition to α cleavage, some aldehydes and ketones undergo the McLafferty rearrangement. In the…
A: Mc-Lafferty rearrangement includes γ-H abstraction and α- β cleavage. The reaction is:
Q: Draw additional resonance structures for each species.
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Q: F3C² CF₂ reactive acyl Most -nucleophilic اعم least substitution H3C reactive CH3 3 to word
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Q: Identify the nucleophile and leaving group and draw the products of attached substitution reaction.
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Q: The enol is the nucleophile in reactions with electrophiles under acidic conditions. True False
A: True. The enol form is nucleophilic at alpha carbon and reacts with electrophile.
Q: proton transfer nucleophilic substitution nucleophilic attack loss of a leaving group
A: Answer:
Q: What is the first step in the mechanism for electrophilic aromatic substitutions and What is the…
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Q: The intermediate In an SN1 reaction is : Carbocation Carbanion Radical O unknown
A: SN1 mechanism
Q: Rank group of compounds from most reactive to least reactive toward electrophilic aromatic…
A: The order of decreasing reactivity toward electrophilic aromatic substitution is,
Q: In addition to α cleavage, some aldehydes and ketones undergo theMcLafferty rearrangement. In the…
A: Mc-Lafferty rearrangement includes γ-H abstraction and α- β cleavage. The reaction is:
Q: synthesize the following alkyl halide?
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- hrydrocarbon tested in bromination rxn room temp. (time to react) elevated temp. (time to react) irradiation (hv) time to reacr toluene 2.10min 26.5 sec 33sec ethylbenzene 49 sec 4 sec 20.9 sec isoproprylbenzene 54 sec 20.3 sec 9.8 sec t-butylbenzene - (no reaction) 27.3 sec 1 min cyclohezane - (no reaction) 20 sec 2.2 min methylcyclohezane - (no reaction) 41 sec 1.22 min Does the order of reactivity you found based on the lab results matches the theory?Explain which compound is the most reactive and why it is the most reactive. Supportyou answer with the relevant structures. use the lab data above*In the Gatterman-Koch reaction, a formyl (- CHO) group is introduced directly onto a benzene ring. For example reaction of toluene with CO and in the presence of mixed CuClAlCl 2 gives p-methylbenzaldehyde. Propose a structure for the reactive electrophile.8 Give logical fragmentation reactions to account for the following ions observed in these mass spectra.(a) n-octane: 114, 85, 71, 57 (b) methylcyclohexane: 98, 83 (c) 2-methylpent-2-ene: 84, 69(d) pentan-1-ol: 70, 55, 41, 31
- Useful Information: sodium metam: Commercial grade sodium metam is 33% pure sodium metam by weight and has a density of 1.2 g/mL. Hydrolysis of metam (Methyl isothiocynate) + H2S Rate constants for hydrolysis for metam (base catalyzed hydrolysis is negligible) = 300 mol -1 L. sec -1 , = 1 x 10-8 sec-1 Metam also undergoes photolysis to methyl isothiocyanate with a half-life of 1.6 hrs. Data for Sacramento River discharge Q = 75,000 L/min mean depth = 0.30 m pH = 7.8 mean width = 3.2 m dispersion coefficient D = 1.6 x 102 m2/min Assuming the spill acts acts as a single point source. How long does it take for the maximum contaminant concentration to get to Lake Shasta? If Na+ acts as conservative (i.e., it is not transformed) tracer, calculate the maximum concentration (in g/L) at Lake Shasta. (Hint: remember that sodium only constitutes a…Determine the Ksp of the following reactions. a. NaC2H3O2 Na+ + C2H3O2- b. HBr H+ + Br c. Zn(OH)2 Zn+2 + 2HO- d. PbCl2 Pb+2 + 2Cl- e. SnSO4 Sn+2 + SO4-What are the key breakdown fragmentation pathways of the product 4-methoxyphenyl acetate?
- Illustrate the resonance effect of the methoxy group -OCH3, on the structure of the benzene ring. Draw all the oissuvke resonance forms of methoxybenzene, including the hybrid Based on the structures, explain how the presence of the -OCH3 group affects: (i) the reactivity of the benzene ring towards electrophilic attack (ii) the orientation or point of attack of an incoming electrophilic reagent on the benzene ring.In light of your answer to Problem 30-40, explain why a mixture of products occurs in the following reaction:Give logical fragmentation reactions to account for the following ions observed in these mass spectra. (a) 2-methylpent-2-ene: 84, 69 (b) pentan-1-ol: 70, 55, 41, 31
- Give logical fragmentation reactions to account for the following ions observed in these mass spectra.(a) n-octane: 114, 85, 71, 57 (b) methylcyclohexane: 98, 83 (c) 2-methylpent-2-ene: 84, 69(d) pentan-1-ol: 70, 55, 41, 31 (e) N-ethylaniline (PhNHCH2CH3): 121, 106, 77*(f) 1-bromo-2-methylbutane: 152, 150, 123, 121, 71 (base)at 25C, which of the following reactions of PbS and H2O2 is more favourable?1) PbS + 4H2O2 -> SO2 + PbO2 + 4H2O2) PbS + H2O2 -> PbSO4 + H2ONMR of profuct is C5H12O2. Solve for the starting material or product and then fill in the missing componenet to give overall reaction. Use one of this reactions I) CH3OH/H2SO4 2) 1. BH3. 2. H2O2, OH,H20 3) 1. OSO4. 2. NaHSO3 4) H3O+ 5)1. Hg(OAc)2, CH3OH. 2. NaBH4 6) Br2 in CCL4 7) Br2 in CH3OH 8)Br2 in CH3OH 9) Cl2 in H2O Show reaction mechanism