(0) (ii) € NC CN D BusSnH Benzene, 80 °C 73% Bu Sinh Toluene, reflux Bu SnH (1.1 eq), AIBN (cat) Benzene, 80 °C, 80% NC H CN pax ERO Page 5 of 6
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- An inexperienced graduate student treated dec-5-ene with borane in THF, placed the flask in a refrigerator, and left for aparty. When he returned from the party, he discovered that the refrigerator was broken and that it had gotten quite warminside. Although all the THF had evaporated from the flask, he treated the residue with basic hydrogen peroxide. Tohis surprise, he recovered a fair yield of decan-1-ol. Use a mechanism to show how this reaction might have occurred.(Hint: The addition of BH3 is reversible.)As measured by their first-order rate constants, the compound shown (R = CH3) undergoes hydrolysis 26 times faster than 2-chloro-2-phenylpropane (R = H) in 90% acetone–10% water at 25°C. Offer a resonance explanation for this rate difference.Provide a reasonable arrow-pushing mechanism for Reaction 5b, and explain the the stereochemical outcome. 5d below
- Propose a mechanism for the reaction in Question2.1.3.Predict the products and mechanisms of the following reactions. Whenif more than one product or mechanism is possible, explain are the mostprobable. (f) isobutyl chloride, AgNO3 in ethanol / water (g) 1-bromo-1-methylcyclopentane, NaOEt in ethanol (h) 1-bromo-1-methylcyclopentane heated in methanolPropose a mechanism for the reaction inQuestion 2.4
- Below is a schematic representation of possible reactions that Compound X can undergo. Use the scheme to answer the following questions. What type of reaction (s) is/are represented by (i) and (ii)? Compound X undergo transitions through either [A] or [B] to produce compounds [1], [2], [3] and [4]. Draw the structures of [A] and [B]. illustrating with reaction mechanisms, show how compounds [1], [2], [3] and [4] are formed. Which of the compounds in the following pairs will occur in relatively higher yields and why?I)[1] and [2] iI)[3] and [4]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…In the reaction of NaBH4 with formaldehyde in methanol sovlent, the products are BH3, CH3OH and sodium methoxide. what is the transition state for the slow step of this reaction? please give structure.
- When 3-methyl-1-butene is reacted with 9-borabicyclo[3.3.1]nonane, the "1-ol" product is formed. What is the detailed reactin scheme for the transformation? Describe the purification procedure.The second-order rate constant (in units of M-1s-1) for acid-catalyzed hydration at 25 °C is given for each of the following alkenes: a.Calculate the relative rates of hydration of the alkenes. (Hint: Divide each rate constant by the smallest rate constant of the series: 3.51 x 10-8.) b. Why does (Z)-2-butene react faster than (E)-2-butene? c. Why does 2-methyl-2-butene react faster than (Z)-2-butene? d. Why does 2,3-dimethyl-2-butene react faster than 2-methyl-2-butene?I am working on a practice assignment for my organic II course and am having difficulty with a question that asks to identify the reaction sequence used to synthesize isopropylcyclopentane. I would really appreciate the help!