ES427508A1 - Procedure for the preparation of 2,2,6,6-tetrametil-4- oxopiperidina. (Machine-translation by Google Translate, not legally binding) - Google Patents

Procedure for the preparation of 2,2,6,6-tetrametil-4- oxopiperidina. (Machine-translation by Google Translate, not legally binding)

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Publication number
ES427508A1
ES427508A1 ES427508A ES427508A ES427508A1 ES 427508 A1 ES427508 A1 ES 427508A1 ES 427508 A ES427508 A ES 427508A ES 427508 A ES427508 A ES 427508A ES 427508 A1 ES427508 A1 ES 427508A1
Authority
ES
Spain
Prior art keywords
translation
preparation
machine
legally binding
google translate
Prior art date
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
ES427508A
Other languages
Spanish (es)
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.)
Novartis AG
Original Assignee
Ciba Geigy AG
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
Priority claimed from CH924173A external-priority patent/CH574412A5/en
Application filed by Ciba Geigy AG filed Critical Ciba Geigy AG
Publication of ES427508A1 publication Critical patent/ES427508A1/en
Expired legal-status Critical Current

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  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Hydrogenated Pyridines (AREA)

Abstract

Process for the preparation of 2,2,6,6-tetramethyl-4-oxopiperidine, characterized in that, in a first phase, acetone is reacted at 5 to 60ºC with ammonia in the presence of 0.2 to 12 mol% ( with respect to the acetone used) of an acid catalyst and, in a second phase, with or without addition of water, the reaction is completed by further heating, the total amount of the included acetone being of ammonia, in molar ratio equal to or greater than 1.6: 1. (Machine-translation by Google Translate, not legally binding)
ES427508A 1973-06-25 1974-06-21 Procedure for the preparation of 2,2,6,6-tetrametil-4- oxopiperidina. (Machine-translation by Google Translate, not legally binding) Expired ES427508A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH924173A CH574412A5 (en) 1973-06-25 1973-06-25 2,2,6,6-Tetra-methyl-4-oxo-piperidine prepn. - from acetone and ammonia with acid catalyst in two stages with addn. of further acetone in second stage
CH1425773 1973-10-05
CH543974 1974-04-19

Publications (1)

Publication Number Publication Date
ES427508A1 true ES427508A1 (en) 1976-07-16

Family

ID=27175210

Family Applications (1)

Application Number Title Priority Date Filing Date
ES427508A Expired ES427508A1 (en) 1973-06-25 1974-06-21 Procedure for the preparation of 2,2,6,6-tetrametil-4- oxopiperidina. (Machine-translation by Google Translate, not legally binding)

Country Status (1)

Country Link
ES (1) ES427508A1 (en)

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