Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB31960/59A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stamicarbon BV
Original Assignee
Stamicarbon BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Stamicarbon BVfiledCriticalStamicarbon BV
Publication of GB902389ApublicationCriticalpatent/GB902389A/en
C07D201/00—Preparation, separation, purification or stabilisation of unsubstituted lactams
C07D201/02—Preparation of lactams
C07D201/08—Preparation of lactams from carboxylic acids or derivatives thereof, e.g. hydroxy carboxylic acids, lactones or nitriles
Abstract
a - Chloro - or a - bromo - d - valerolactam, -e -caprolactam or -#z-oenantholactam is prepared by reacting 2-chloro-azacyclo-2,3-hexene-N-carbochloride, 2-chloro-azacyclo-2,3-heptene-N-carbochloride or 2 - chloro - azacyclo - 2,3-octene-N-carbochloride with hypochlorous or hypobromous acid or a salt thereof in the presence of water. Specifications 901,169 and 902,390 are referred to.
GB31960/59A1958-09-251959-09-18Process for preparing an ª+-halogeno-ª+-lactam
ExpiredGB902389A
(en)
Procedure for the obtaining of a product given of great stability, with all the properties dimanantes of active chlorine (Machine-translation by Google Translate, not legally binding)