Process for the preparation of caprolactam

Organic compounds -- part of the class 532-570 series – Organic compounds – Unsubstituted hydrocarbyl chain between the ring and the -c-...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C07D20104

Patent

active

055941370

ABSTRACT:
A process for the preparation of caprolactam by reacting cyclohexanone oxime with a cationic or nonionic surfactant and a cosurfactant in dilute sulfuric acid at a temperature in the range of 15.degree. C. to 40.degree. C., neutralizing excess acid present in the solution and recovering the caprolactam from the solution by filtration.

REFERENCES:
patent: 2221369 (1940-11-01), Cass
patent: 2487246 (1949-11-01), Johnson et al.
patent: 4359421 (1962-11-01), Bell
L. N. Lewis, Chemical Catalysis by Colloids and Clusters, Chem. Rev.; 93 (1993) 2693-2730.
B. K. Jha, A. S. Chhatre, B. D. Kulkarni, R. A. Joshi, R. R. Kalkote, Enhanced Decarbamoylation of D(-)-N-carbamoyl phenylglycine under Micellar conditions. J. Colloid Interface Sci.; 163 (1994) 1-8.
I. Rico, K. Halvorsen, C. Dubrule and A. Lattes, Effect of Micelles on Cyclization Reactions: The Use of N-Hexadecyl-2-chloropyridinium lodide as an Amphiphilic Agent in Lactonization and Lactamization. J. Org. Chem.: 59 (1994) 415-420.
B. C. Clark, Jr., T. S. Chamblee and G. A. lacobucci, Micellar-induced Selectivity and Rate Enhancement in the the Acid-Catalysed Cyclization and Rearrangement of Monoterpenes. The Solvolysis of Linalyl and Geranyl Acetates. J. Org. Chem.: 54 (1989) 1032-1036.
A. S. Chhatre, R. A. Joshi and B. D. Kulkarni, Microemulsions as Media for Organic Synthesis: Selective Nitration of Phenol to ortho-Nitrophenol Using Dilute Nitric Acid. J. Colloid interface Sci.; 158 (1993) 183-187.
B. K. Jha, A. S. Chhatre and B. D. Kulkarni, Cyclization and Molecular Rearrangement under Micellar and Microemulsion Conditions. J. Chem. Soc. Perkin Trans. 2;6 (1994) 1383-1385.
A. Kumar, G. Oehme, J. P. Roque, M. Schwarz and R. Selke, increase in the Enantioselectivity of Asymmetric Hydrogenation in Water influenced by Surfactant of Polymerized Micelles. Angew. Chem. Int. Ed. Engl.; 33 (1994) 2197.
J. H. Fendler and E. J. Fendler, Catalysis in Micellar and Macromolecular Systems; Academic: New York 1975.
M. Gautier, I. Rico and A. Lattes, Comparative Study of Photoamidation of a Mixed Olefin R.sub.f CH=CHR.sub.H in Homogeneous and Microscopically Heterogeneous Media. J. Org. Chem.; 55(1990) 1500-1503.
R. Schomacker, Chemical Reactions in Microemulsions as Solvents for Organic Syntheis. J. Chem. Research (S); 1991-92-93.
K. Holmberg, Organic and Bioorganic Reactions in Microemulsions. Adv. Colloid interface Sci; 51 (1984) 137-174.
Wei, L. et al. "Enhanced Cyclization . . . " Langmuir 1991, 7, 1336-1339.
Menger, F. M. "Organic Reactivity . . . " J. Am. Chem Soc. 1991, 113, 9621-9624.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Process for the preparation of caprolactam does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the preparation of caprolactam, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of caprolactam will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1389415

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.