Draw the structure of (E,4R) 4-methoxy-2-hexenal.

Provide the E2 mechanism for β-elimination reactionemploying 2-chloro-2-methylbutane to prepare 2-methyl-2-butene and 2-methyl-1-butene reaction. Use the actual structures of thereactants and products. Explain which of the alkenes is the major product ofthis reaction ?

5) Draw the structure, showing the stereochemistry, of the cyclic products 19 and 20, and the acyclic products 21 and 22. What is the relationship between 19 and 20? What is the relationship between 21 and 22? H3C. \CH2CH3 ...|l LIAIHA CH3ONA Br 19 + 20 21 22 + 19 20 21 22 relationship between 19 and 20 relationship between 21 and 22

Draw the structure of the neutral product formed in the reaction shown. Select Draw Rings More C H. C2H;0- C2H5OH

please answer them

Draw the structures of missing reactant, reagent, or major organic product(s)

Question is attached

4. Draw the organic products of the reactions of (R)-2-iodobutane with azide ion and methanol. Draw allstereoisomers expected to form. (R)-2-iodobutane Na*N3* CH3OH

1. Draw the structure of sodium (E) 2-bromo-3-iodo-2-octenoate. 2. Give the IUPAC name of this compound, including stereochemistry. 3. Draw the most stable chais CH³

7) CH₂CH₂Br (hint: few necessary reagents: Mg, PBr3, D₂O) CH₂CH₂CH₂CH₂D