2006-07-01 14:40:10 · 4 answers · asked by pama80 1 in Science & Mathematics ➔ Chemistry
cyclohexanol with sulfuric acid gives cyclohexene
2006-07-01 14:49:27 · answer #1 · answered by prune 3 · 1⤊ 0⤋
Cyclohexanol is a secondary alcohol. It's true that a tertiary alcohol can he dehydrated with a strong acid (eg. HCl (aq) or H2SO4 (aq)) (this is an E1 reaction). However cyclohexanol, a secondary alcohol will not undergo efficient hydration via strong acid solvation. This is because the secondary alcohol produces a secondary carbocation with insufficient stability. Hence, phosphorus oxychloride (POCl3) is used as a solvent, which converts the hydroxyl (-OH) group (poor leaving group) into a good leaving group (OPOCl2). Now this reaction can take place via SN2 using pyridine or other ED groups (or bases) as solvents. This is the best method for dehydration of cyclohexanol.
2006-07-01 23:59:31 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Go to www.chem.umass.edu/people/samal/267/yieldcalc.pdf
Hope this works for u.
2006-07-01 22:12:21 · answer #3 · answered by d8jk 3 · 0⤊ 0⤋
wat the ans u 1 ? the % yield ? but now i haf some q about it, when the pratical; is carry on, the temperature is increase and decrease consistency, ? wat is the enthalpy energy of it ? coz i 1 na relate it to thermodynamic
2006-07-07 04:41:24 · answer #4 · answered by Anonymous · 0⤊ 0⤋