Question

Conceptual Checkpoint 20.18 Propose a mechanism for the following transformation. For the mechanism, draw the curved arrows as needed. Include lone pairs and charges in your answer. Do not draw out any hydrogen explicitly in your products. Do not use abbreviations such as Me or Ph. 1) xs Et MgBr 2) conc. H,SO, heat Step 1 Get help answering Molecular Drawing questions. Draw Step 1 of the mechanism. HC—CHE Edit LINK TO TEXT

Answer 1

Answer - (1) KS Let Mg Br (2) con.H2SO4, Above reaction is formed a major transformation excess react with (1.) Acid Chloride Grignard Reagent we get Tertiary alcohol. (2.) After forming tertiary alcohol it treated with acid with heat we get dehydration Prodent C Elimination product ) Note: Tertiary alcohol will go El reaction mechanesm.. Alchol dehydration order of reativity. MeoH L1 L2 L3° Note: Here we using strong acid so that we get alrohal dehydrating with the help of heat heat is not sufficent we get other product Reaution Mechanism:

с и , сиз HE-CH2-mg-Br 1-el (El Mg By 0 Step 2 е у Stee3 — см. -сна A CH2-CH3 2-CH3 Again we-cha-mg By | Hot Step 4 014 L CH2 CH3 CH2-CH3 Y 0 Tertiary Alcohol Product. Tertiary alcohol to alkene (LE) ECOH + H2SO4 -> Mechanism El Elimination) Step I = Los oH oid y, =P

- W GU Id 1 target protect