b. Please provide a "curved arrow" mechanism for the following transformation. OH H+ Браон -OH

Draw a mechanism for the following transformation. [H,SO4] cat. HO.

Q2. When (CH3CH2)3CBR is added to CH3OH at room temperature, the major product is (CH30)C(CH2CH3)3 and a minor product is CH3CH3DC(CH2CH3)2. Propose a mechanism for the product that is formed by the substitution reaction. Use curved arrows to show the movement of electrons.

Q4. The herbicide oxyfluorfen can be prepared by the reaction between phenol and an aryl fluoride. Propose a curved arrow mechanism for this reaction. 1 F3C. LOCH2CH3 F3C. КОН CI `NO2 CI OH LOCH2CH3 `NO2 Oxyfluorfen

Fill in the missing reagents a-e in the following scheme:

Provide a complete curved-arrow mechanism for this transformation. I am confused.

Provide a mechanism for the following transformation, clearly illustrating each step with curved arrows. CH3 conc. H₂SO4 A CH3

Draw the major organic product of the reaction. Indicate the stereochemistry via wedge/dash bonds, including explicit H and D atoms, at the stereogenic center. Omit byproducts such as salts or methanol. Br NaOCH CH OH H

Draw the step-by-step mechanism using curved arrows of the following reaction.

5. Which bromocyclohexane starting material would react faster - the cis or trans, and explain why? Draw both chair forms of the starting material to prove your point. Br K* OC(CH) K* OC(CH); Br cis trans