Benzene → Cyclohexanone Oxime

HRID 1609690Notes

Reaction equation

[CH:1]1[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[C:7]1(=[N:13][OH:14])[CH2:12][CH2:11][CH2:10][CH2:9][CH2:8]1.C1(S([O:24][CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][CH2:30]CCCCCC)(=O)=[O:22])C=CC=CC=1.[Na]>S(=O)(=O)(O)O>[C:7]1(=[N:13][OH:14])[CH2:12][CH2:11][CH2:10][CH2:9][CH2:8]1.[C:1]1(=[O:22])[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.[C:25]1(=[O:24])[NH:13][CH2:30][CH2:29][CH2:28][CH2:27][CH2:26]1

Participants

Conditions

Temperature: 40 °C

Procedure

Take 200 ml of aqueous solution of 2.16N sulfuric acid in a round bottom flask. Dissolve in this solution 6.8 gm of sodium dodecyl benzene sulfonate (SDBS) and 1.3 gm of benzene by mild stirring. Keep the flask in a water bath maintained at temperature of 40° C. A macroemulsions of benzene in sulfuric acid is formed. To this macroemulsion, add 14.0 gm of cyclohexanone oxime and stir for 21/2 hours. Neutralize the excess acid using Whatman No. 1 filter paper to remove or recycle the the unreacted cyclohexanone oxime. Separate the organic and aqueous layers of the filtrate. Wash the aqueous layer with 3×10 ml benzene and add the benzene washing with the main organic layer. Analyze the benzene layer, the aqueous layer and the unreacted cyclohexanone oxime as obtained above by Gas Chromatography for the amount of cyclohexanone oxime, cyclohexanone and caprolactam.

Workup

filtration1 filter paper
customto remove
customSeparate the organic and aqueous layers of the filtrate
washWash the aqueous layer with 3×10 ml benzene
additionadd the benzene washing with the main organic layer

Sources & evidence

ORD record: ord-4563175d5b14421ba468625b919400cc
Source dataset: uspto-grants-1995_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05401843

Reaction notes

Loading…