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
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Stamicarbon BV
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Stamicarbon BV
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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
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Chemical & Material Sciences
(AREA)
Organic Chemistry
(AREA)
Hydrogenated Pyridines
(AREA)
Polyamides
(AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
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)