Question

Dehydration of 2 Methyl Cyclohexanol: OH CH CHE H2PO4 2-methylcyclohexanol C H140 Mol. Wt.: 114.19 1-methylcyclohex-1-ene CH2 Mol. Wt: 96.17 7. (15 pts) Draw the experiment setup of this experiment and label each piece of equipment used.

i need both questions please

Answer 1

alehydration of 2- Methylcyclohexanol (TO) Experimental setup (Introduction) can be dehydrated by using an acid such as Tophuric or phosphonic acid water will be eliminated from the molecule and a c=c double bond will o be formed If alcohol is not ymmetric , then a mixture of products containing alkene isomers is possible. The reaction follads El mechanism 6 and product is according to saytzen's rule. Experimenti 3 • Add 2-methylcyclohexand insml osy, phosphoric acid • and a boiling chip in a loome of round bottom - flask. • Attach the flask to a fractional distillation - assembly . Using a heating mantle, slowly heat the contents of the flask to a boil. • Dis till the product from the reaction mixture, keeping distillation temperature below 96%ch regulating the heat temperature.

내3 o continue distilling until 18-20 ml of liquid . has been collected • Transfer the distillate to a separatory funnel and remove the water layer. Pour organic layer into a clean, dry flask and dry the liquid using Calla. • decant the dried product into another clean, dry pre-weighed flask and then weigh to determine the product yield Note The acid a catalyzed dehydration of 2-methyl & cyclohexanol girles tuno o isomenic products regio is T-methylcyclohexene and 3-methyl- Cyclohexene 3 1 H₃ PO4 t +H2O - 2-methyl I-methyl cyclohexanol 3-methylcyclo- cyclohexene hexene (Major) (minor) conclusion The dehydration of 2-methylcyclohexanol in H₂PO4 game to methylcyclohexene as the major product, Pas puedicted by saytzev's rule. (8) Mechanism of obou reaction. OH OH OH TH, O 2. metiyly cohexanol) aad) SH T CH3 HOHE Cou - сну

+ H₂Ot I CH3 1-methylcyclohexene. This is the El mechanism for the formation 1-methyl cyclohexene. of of El reaction mechanism for the formation 3-methylcyclohexene. нин ( — он In - e co-H tone = +H₂O 40 H — си? CH3 (2- metteyleyclohexand) laud) + H₂ot O acid. 3-methylcyclohexene