Question 9: Using appropriate mechanism step(s) and arrow(s), draw the complete mechanism for the following E1...
The following reaction follow an E1 mechanism. Propose an arrow-pushing mechanism for the following transformations using proper curved arrows: Conc. H2SO4 heat By what mechanisms are the following reactions likely to occur? Draw the major product(s) for each reaction. Show relevant stereochemistry if appropriate. If the expected products are racemic, just draw one enantiomer and write racemic. NaoMe NaoMe OTS NaSH OTS H20
Using appropriate curved arrow notation, draw a stepwise mechanism for the reaction. Br^- HBr H^+ Br^+ H_2O
5. For the following reaction step, indicate which pattern of arrow pushing it represents. Circle one. -Ogr Br A. proton transfer C. nucleophilic attack B. loss of leaving group D. rearrangement 6. The following reaction has three mechanistic steps (down, across, and up). Draw all of the curved arrows necessary to complete the mechanism. (Hint: there should be 4 arrows total.) HBO OH Br H-Br OH2 + H₂ö:
3. (continued) For each reaction, draw the structure of the major product(s) including stereochemistry where appropriate. Fill in the box below each arrow with the mechanism(s) that will be followed (SN1/E1, SN2, or E2). For SN1/E1 reactions, draw products for both. g) Сн,сн,он h) CH2O- Na CH3OH i) Me. Br A Eto Nat Me
2. Draw the mechanism of the following reaction and label each step with the appropriate arrow pushing pattern. Show stereochemical information when appropriate. SOA CH3OH
A. Products and Mechanism 1. Draw a detailed step-wise mechanism using curved arrow notation for the following reaction: EtO E t 1. xs PhMgBr 2. HCI, H,0
Draw the major product of this reaction & a complete curved arrow mechanism and explain why the observed product is formed. H-Br
8. (15 pts) Draw a complete arrow pushing mechanism(s) for the reaction below. Please draw every arrow, every bond broken or formed, and the resulting regiochemistry and/or stereochemistry if there is any. 1. N ܂ H I 2. H OH Н. H H
Draw an arrow-pushing mechanism for each step of the following two-step reaction sequence and draw the resulting products. Don\'t worry about the phenyl groups attached to phosphorus; just abbreviate them with Ph. Draw an arrow-pushing mechanism for each step of the following two-step reaction sequence and draw resulting products. Don't worry about the phenyl groups attached to phosphorus; just abbreviate them wi Ph. 1.CH,I Ph-P: -> phosphonium ylide 2.BuLi Ph Draw Hs, lone pairs, and curved arrows. Draw Hs, lone...
8. (15 pts) Draw a complete arrow pushing mechanism(s) for the reaction below. Please draw every arrow, every bond broken or formed, and the resulting regiochemistry and/or stereochemistry if there is any. 1. care N H I 2. H. OH i H H