Which stereoisomer(s) will be formed as a result of the reaction shown below? 1. MCPBA 2. H₂O+ O 1) S,R O2) R,R O 3) S,S O 1 and 2 O2 and 3 1 and 3
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- 3. Write structures for products A, B, A OH (-H₂) Br BChemistry Alkanes: Order the stereoisomers in order of energy in their lowest energy conformations Part A The following three compounds can be made by a reaction developed in the Grossman group. Rank them from lowest to highest energy in their lowest energy o Rank from lowest to highest. To rank items as equivalent, overlap them. Reset Help CO₂Me CO₂Me CO₂Me ICNO CNO ww Submit CN CO Me CH₂ lowest energy The correct ranking cannot be determined. My Answers Give Up CN CO Me CH₂ CN O CN CO Me CH₂ highest energyWhich one of the structures below is the most stable / lowest energy confor of the cis disubstituted-cyclohexane? %3D II IV OII O IV
- 8. For the following pair of compounds, determine which compound is more stable 1111*** a. A b. B A B amList from most stable to least stable. Me H. Me Me Me Me H. H H. H. H. H. Me II © GMU 2020 O I, II I O III, I, II O I, II, II III, II, I O II, I, II 工エ エエ エエRank order the following in terms of relative reactivity (most reactive on the left, least reactive on the right). H. A В C D
- 9) There are 3 different cyclopropane molecules with the formula GHĄC12. a. Draw and build the 3 molecules. b. Below each drawing, name each molecule with correct nomenclature. Label a pair that are constitutional isomers. d. Label a pair that are stereoisomers (or configurational isomers). С.2. SN2 reactions to fight cancer Cyclophosphamide is a chemotherapy medication used to treat various types of cancers (i.e. lymphoma, leukemia, and breast cancer). It belongs to a group of cytotoxic alkylating agents known as Nitrogen mustards. The activity of these drugs is attributed to the chloroethylamine groups. CI R. 'N I R NH Cl + Cl R'-NH₂ Cyclophosphamide In this exercise, you will explore the mechanism responsible for the cytotoxic activity of Nitrogen mustards and how it is possible to tune their activity (therefore their toxicity) by modifying their chemical structure. R. 2.1 Identify and label all nucleophiles/electrophiles in the following reaction. `N I R chloroethylamine 2.2 Based on your above analysis, draw two possible SN2 reaction mechanisms Intermolecular reaction (reaction between reaction sites on different molecules) Intramolecular reaction (reaction between reaction sites within the same molecule) 2.3 Which of the above reaction will be faster? Why? 2.4 Copy…29. Recalling that the orthonitrate anion (NO43) is best described as acyclic, how many non-bonded (lone) electron pairs are there (in total) in this ion in its most important resonance structure? A. 3 non-bonded (lone) electron pairs in total. B. 9 non-bonded (lone) electron pairs in total C. 11 non-bonded (lone) electron pairs in total D. 12 non-bonded (lone) electron pairs in total E. None of the above 30. Given that the orthonitrate anion (NO43) is best described as acyclic, how many resonance structures contribute to its resonance hybrid when using the Octet Rule? A. There is only one (1) important resonance structure B. There are two (2) important resonance structures C. There are three (3) important resonance structures D. There are four (4) important resonance structures E. None of these are correct