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- Assign the stereochemical configuration (E or Z) for the alkene below. Show your work, indicating clearly which groups are assigned high priority (e.g., through assigning the groups numbers, circling only the high priority groups, or labeling groups as high or low).Order the following substituents from highest priority to lowest priority: CH3, OH, H,F. Use the Cahn-Ingold-Prelog priority system. a. F, CH3, OH, H b. H, CH3, F, OH c. F, OH, CH3, H d. H, CH3, OH, FWhich of the following would accomplish the transformation below? a) 1. HSCH2CH2SH, H+; 2. H2, Raney Ni b) H2N-NH2, NaOH(aq), heat c) H2, Pd d) All of the above
- When Br2 is added to buta-1,3-diene at -15 °C, the product mixture contains 60% ofproduct A and 40% of product B. When the same reaction takes place at 60 °C, theproduct ratio is 10% A and 90% B.Show why A predominates at -15 °C and B predominates at 60 °C.A)Circle all of the stereo centers in MDMA. B) assign the absolute stereochemistry (R or S) for each stereo center9. Under basic conditions CH3O(-) compound (1) is rearranges to (6). Please use arrows to show this transformation.
- 1,2-diphenylethylene 1) Determine the number of canonical forms. 2) Indicate the order of stability of these canonical forms. Reason for it. (in the figures drawn, make sure that the C's do not have more than 4 links)1-ethylcycloheptene + cold, dilute KmnO4Consider the hydrogenation reaction below, which replaces all with the appropriate number of carbon-to-hydrogen bonds C10H12+3H2 = C10H18 Assuming 100% hydrogenation, how many rings are present in C10H12?
- First Writedown which reaction it is? SN1, SN2, E1? Write a stepwise mechanism for the following reactions showing ALL intermediates. Use curved arrows to symbolize the flow of electrons to show how each of the intermediates and product are formed. Show all necessary lone pairs and formal charges.1. Does your unknown contain any Br atoms? Cl? Odd number of N? Why or why not? 2. Give a molecular formula for your product if it contains no oxygens. Give the molecular formulas if your product contains one and two oxygens (some may not be possible). 3. Calculate the index of hydrogen deficiency, and therefore the number of rings and/or p-bonds in your unknown for each of the molecular formulas in question 3. Show your calculations.Rearrangements can occur during the dehydration of 1° alcohols eventhough no 1° carbocation is formed—that is, a 1,2-shift occurs as the C—OH2+ bond is broken, forming a more stable 2° or 3° carbocation, asshown in Equation [1]. Using this information, draw a stepwisemechanism for the reaction shown in Equation [2]. We will see anotherexample of this type of rearrangement