(i-Pr)2P A -P(i-Pr)2 1b) Complex A from 1a) above promotes the dehydrogenation of butane to afford 1-butene. Formulate a plausible, complete catalytic cycle for this transformation and attach the proper name to each reaction step as discussed in the lecture; to safe time with paper work, any dummy ligands can be skipped in the cycle.

01:50 4G File Details 4CH003/UM1: Fundamentals of... Introduction NaBH4 OH C=0 H benzophenone diphenylmethanol Ketones are readily reduced to secondary alcohols by reaction with sodium borohydride. The aim of this experiment is to determine the time required to effect the complete conversion of the ketone, benzophenone to diphenylmethanol at room temperature. This investigation may be achieved by isolating and analyzing the reaction product after different reduction times. Infrared spectroscopy affords a convenient method of analysis; by comparing the IR spectrum of the crude reaction product at different time intervals one would expect to see the intensity of the hydroxyl absorption peak increase relative to that of the original carbonyl peak. From this you can deduce the optimum time for the reduction process at room temperature. Procedure Note the "reduction time" that the demonstrator assigns to your group. Different groups will be assigned different times, eithert = 2.5 minutes,…

What are the relevant transition states for this reaction?

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?

Which of the species below best depicts the likely transition state for the reaction between methyl iodide, CH3I and sodium methylthiolate, NaSCH3?

Another useful aspect of Pd(0)-catalyzed allylic alkylation is the ability to take reactants that are meso and desymmetrize them in the resulting products through the addition of a chiral ligand for the Pd metal. Draw the two n-allylic complexes formed in this reaction of the following reactant with PdL,. Describe why chirality in a ligand L would influence the preference for one of these complexes over the other. AcO OAc

> College Of Agr, Eng & Science > School Of Chemistry & Physics > Westville > 2021 yTests and Quizzes > Organic Summative Test 2 30 September 2021 For the reaction of ethylchloride with sodium hydroxide via the SN2 mechanism, we get inversion of configuration because NAOH CH;CH2CI: Select one: O a. the reaction occurs in two steps with the formation of a transition state complex. O b. the leaving group leaves which allows the nucleophile to attack the alkyl halide. Oc. the leaving group leaves to form a transition state complex which favours inversion of configuration. o d. the nucleophile attacks the alkyl halide from the opposite side of the leaving group whilst the leaving group is attached. Clear my choice Next page & 8 R

Give clear handwritten reaction mechanism of all subparts!

Heterocyclic compounds plays an important role in our daily life. They are mainly used in pharmaceutical and agrochemical products to name a few. 3. It is required to introduce a halogen group to a five membered ring, thiophene. Discuss the reaction mechanism involved in the reaction by selecting a suitable halogen group and analyze why a particular substituted product obtained after the reaction is predominant over the other possible product(s) with the help of reactions.

Which of the following represents the correct transition state for a hydroboration reaction mechanism (use the correct number or your answer: 1, 2, 3, or 4)? Also, answer any follow-up questions. Anne + BH₂ CH₂ H₂B----H Hiine. R 2 CH₂ H 3 ansition state of hydroboration is best described by structure number -CH₂ "do e term (one word) that describes the stereocontrol of the hydroboration reaction? te da term that describes the regiocontrol of the hydroboration reaction? the term (one word) that best describes how the bonds are broken and formed in the first step of a hydroboration ism? 4 BH₂ CH₂2 hp