1. For each of the reactions below, give the structure(s) of the product(s), and be sure to indicate relative stereochemistry where appropriate. If more than one product is formed, indicate if they will be formed in equal amounts, or if one is expected to be the major product. If no reaction is expected to occur under the indicated conditions, then write “no reaction" or N.R. and explain why you would expect nothing to occur. 1. PPH3 2. KOTBU а. Br 3. На, Pа/C b. H3C H3C- 1. O3 2. Me2S 3. H2NNH2, КОН, Д с. H* (-H2O] H3C „CH3 N. H

1. For each of the reactions below, give the structure(s) of the product(s), and be sure to indicate relative stereochemistry where appropriate. If more than one product is formed, indicate if they will be formed in equal amounts, or if one is expected to be the major product. If no reaction is expected to occur under the indicated conditions, then write “no reaction" or N.R. and explain why you would expect nothing to occur. 1. PPH3 2. KOTBU а. Br 3. На, Pа/C b. H3C H3C- 1. O3 2. Me2S 3. H2NNH2, КОН, Д с. H* (-H2O] H3C „CH3 N. H

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter20: Dienes, Conjugated Systems, And Pericyclic Reactions

Section20.6: Sigmatropic Shifts

Problem 20.12P

See similar textbooks

Similar questions

Fill in the missing product, or reactant in the reactions below. If no reaction will happen, write “NOREACTION” in the product box. If multiple products can form, show the MAJOR product, taking care toillustrate stereochemistry as appropriate
Complete the following reactions with the majority products and the missing reaction conditions. Indicate stereochemistry if applicable. Also indicate the type of reaction that took place (SN1, SN2, E1, E2, E1bc)
1. Complete the following reaction schemes by adding the appropriate reactant(s), reagent(s), conditions, and/or major product(s). Make sure to indicate the proper regiochemistry and stereochemistry when necessary:
3. For each of the reactions below, give the structure(s) of the product(s). Be sure to indicate relative stereochemistry if appropriate. If more than one product is formed, indicate whether they will form in equal amounts or whether one will be the major product. If no reaction is expected to occur under the indicated conditions, then write “no reaction” or NR.
Please provide a curved-arrow mechanism for the following reaction. Be sure to use your mechanism and a few words to explain the regiochemistry of the bromines in the final product and why each carbocation intermediate in your mechanism is the preferred intermediate for that step. Include ALL lone pairs and formal charges. Thank you.
For 1 and 2, identify the predominant type of reaction: SN1, SN2, E1 and E2. Draw the major products only. Show stereochemistry whenever applicable.
The synthesis above can be performed with some combination of the reagents listed below. Give the necessary reagents in the correct order. Be sure to consider stereochemistry and regiochemistry.A. NaOHB. mCPBAC. OsO4, tBuOOHD. NaHE. H2, LindlarF. CH3CH2CH2BrG. CH3CH2ClH. NaNH2I. H3O+J. Na, NH3(l)
Draw the arrow-pushing mechanism and propose the products. When appropriate, make sure to indicate the appropriate stereo-/regio-chemistry of the product(s). Note that the mechanism(s) by which the product(s) form in reactions A and B are shown in pink. For Reactions C, D, and E you need to deduce the mechanism by carefully analyzing yout reagents and conditions.
Can you assit with confirming product(s), define major/minor, show stereochemistry, if appropriate, and/or if no reaction occurs
For the dehydrohalogenation (E2) reaction shown, draw the Zaitsev product(s) resulting from elimination involving C2–C3 (i.e., the carbon atoms depicted with stereobonds). Show the product stereochemistry clearly. If there is more than one organic product, both products may be drawn in the same box. Ignore elimination involving C2 or C3 and any carbon atom other than C3 or C2.
What should the major product be of the reactions below? Specify stereochemistry if appropriate
Give the major organic product of the following reaction, include stereochemistry as appropriate. Explain the 1. and 2. (above and below arrow)