Benzene → (1-Methylcyclohexyl)benzene

Temperatur

0 °C

A mixed solution of 75.0 ml (632 mmol) of 1-methyl-1-cyclohexene and 56.4 ml (632 mmol) of benzene was added at 0° C. dropwise to 225.6 ml (2.53 mol) benzene solution of 231 g (2.36 mol) of sulfuric acid spending 1.5 hours, followed by stirring at 0° C. for 1.5 hours. The reaction solution was quenched by adding 300 ml of water, and the water layer was separated. The thus obtained organic layer was washed with 100 ml of saturated sodium hydrogen carbonate aqueous solution, 100 ml of water and 100 ml of saturated brine and dried with anhydrous sodium sulfate. After filtering the desiccant, the filtrate was concentrated to obtain crude 1-methylcyclohexylbenzene. By purifying the thus obtained crude 1-methylcyclohexylbenzene by distillation under a reduced pressure (from 110 to 113° C./10 mmHg), 40.2 g of the specified substance was obtained with a yield of 36.5%.

1. customThe reaction solution was quenched
2. additionby adding 300 ml of water
3. customthe water layer was separated
4. washThe thus obtained organic layer was washed with 100 ml of saturated sodium hydrogen carbonate aqueous solution, 100 ml of water and 100 ml of saturated brine
5. dry with materialdried with anhydrous sodium sulfate
6. filtrationAfter filtering the desiccant
7. concentrationthe filtrate was concentrated
8. customto obtain crude 1-methylcyclohexylbenzene
9. customBy purifying the

ORD-Eintrag

ord-0785234833db4960a8729fbb9883c58e

Quelldatensatz

uspto-grants-2012_07

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08217204B2