Process for preparing .alpha.-chloro-.epsilon.-caprolactam

Details Process for preparing .alpha.-chloro-.epsilon.-caprolactam Process for preparing .alpha.-chloro-.epsilon.-caprolactam

1976-09-02

1977-08-23

Jiles, Henry R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D22310

Patent

active

040440010

ABSTRACT:
A process is described for preparing .alpha.-chloro-.epsilon.-caprolactam, an intermediate for the synthesis of L-lysine, comprising reacting an N-substituted -.alpha.-chloro-.epsilon.-caprolactam, wherein the N-substituent is an organic radical selected from the group consisting of arylsulfonyl, aroyl and alkanoyl radicals, with .epsilon.-caprolactam at a temperature within the range of about 50.degree. to about 250.degree. C to form .alpha.-chloro-.epsilon.-caprolactam and an N-substituted-.epsilon.-caprolactam. A continuous process is also described for the production of .alpha.-chloro-.epsilon.-caprolactam further comprising the chlorination of N-substituted-.epsilon.-caprolactam to produce N-substituted-.alpha.-chloro-.epsilon.-caprolactam.

REFERENCES:
patent: 2877220 (1959-03-01), O'Neill et al.
patent: 3757007 (1973-09-01), Fujita et al.
patent: 3767648 (1973-10-01), Fujita et al.

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