When 3-methyl-1-butene is treated with a catalytic amount of BF3 and H2O a cationic polymerization process occurs, but the expected homopolymer is not formed. Explain in detail with mechanism(s), intermediate structure(s) and the final repeat unit(s).
When 3-methyl-1-butene is treated with a catalytic amount of BF3 and H2O a cationic polymerization process...
6. Cationic ring-opening polymerization of (S)-3- methyltetrahydrofuran with a catalytic amount of chlorosulfonic acid (HSO3CI) yields a low-molecular weight polymer chain. Draw a reasonable mechanism for the growth of this polymer; show at least 3 monomers reacting with each other. Explain why an SN2 or SN1 reaction mechanism is more likely. HSO3CI
when an aqueous solution of (R)-2-butanol is treated with a catalytic amount of H2SO4, slow racemization of the alcohol occurs. Explain the result by showing all the steps in the mechanism for this process, including the observation that only a catalytic amount of acid is needed.
Question 5: Starting with 3-methyl-1-butene, draw the organic product formed when treated with the following reagents: 3-methyl-1-butene a) HO, b) CI, (dark) H,SO d) 1) BH, 2) H,0,, c) CI, (light) NaOH e) H, Pt
help!
3) Mechanism and Reactivity Part 1 The following molecule was treated with a catalytic amount of p toluenesulfonic acid, and three products were formed. Give the structures of A, B, C Indicate which is the major product and give a mechanism for its formation HO cat. TSOH, THE Hai
Give the structure of the two stereoisomers formed when (E)-3-methyl-2-hexane undergoes catalytic hydrogenation. Assign R or S to both stereoisomers.
1) Which base yields the most SN2 when treated with the same
starting material? (draw this structure with stereochemistry)
2)Which base would have the least yield of SN2?
3) What conclusions are made about the amount of SN2 product
formed as a function of base strength?
4) Discuss stereospecificity of an SN2 reaction and draw the
SN2 transition state intermediate formed when benzoate is treated
with starting material.
4. When the starting material shown below is treated with a variety...
Design a synthesis of 4-methyl-2-pentyne from 3-methyl-1-butene. H2C Part 1 out of S Choose the best option for the immediate precursor to the target molecule. H3C HI A Br Br Br H Br E H,C- H 3 attempts left Check my work Click the "draw structure" button to launch the drawing utility. Give the structure corresponding to 4-tert-butyl-5-decyne. draw structure Be sure to answer all parts. Give the IUPAC name for the following compound. (select) (select) Be sure to answer...
3. When 1,4-dimethylcylopent-1-ene is treated with bromine in water, one of the depicted stereoisomers and its enantiomer are formed. Circle the correct product and write the steps in the mechanism that show how this reaction occurs. Be sure to show the following: (1) all necessary curved arrows (2) the structure of any intermediates that are formed during the mechanism, including stereochemistry (3), what if anything is added or lost during each step of the mechanism, (4) any nonzero formal charges....
3. When 1,4-dimethylcylopent-1-ene is treated with chlorine in water, a racemic mixture of one of the depicted constitutional isomers is formed. Circle the correct product and write the steps in the mechanism that show how this reaction occurs. Be sure to show the following: (1) all necessary curved arrows (2) the structure of any intermediates that are formed during the mechanism, including stereochemistry (3), what, If anything. Is added or lost during each step of the mechanism, (4) any nonzero...
3. When 2-ethylcyclohexanone is treated with LDA (in the solvent THF), followed by ethyl bromide, two different alkylated products are formed. Answer the following questions about this reaction. 1) LDA THE two products 2) CH CH Br 3. a. What is LDA and what is its purpose? 3. b. Draw mechanisms for the reactions and show how the two different products are formed. Product A Mechanism Product B Mechanism 3. c. Draw an energy diagram for the formation of both...