Process for the manufacture of lactams

Details Process for the manufacture of lactams Process for the manufacture of lactams

1972-06-09

1977-10-18

Jiles, Henry R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

423356, 423387, 423525, 423530, 423541A, C07D20104

Patent

active

040545628

ABSTRACT:
In a process for manufacturing a lactam which includes rearranging a cycloalkanone-oxime with sulfuric acid to form the lactam, neutralizing the rearrangement mixture with ammonia to form ammonium sulfate, and separating the lactam and the ammonium sulfate, the improvement which comprises:

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patent: 3133055 (1964-05-01), Grulet et al.
patent: 3275407 (1966-09-01), Furkert et al.
patent: 3292996 (1966-12-01), Furkert et al.
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patent: 3359069 (1967-12-01), Furkert et al.
patent: 3383170 (1968-05-01), Furkert et al.
patent: 3701809 (1972-10-01), De Rooij et al.
patent: 3761575 (1973-09-01), Furkert
patent: 3795731 (1974-03-01), Furkert
patent: 3852272 (1974-12-01), De Rooij
patent: 3852273 (1974-12-01), De Rooij
Sittig, "Caprolactam and Higher Lactams" (Noyes Development Corp.), p. 70, (1966).
Seel "Fortschr. Chem. Forsch" vol. 4, pp. 301-332 (1963).

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