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Expired
Application number
GB4905/60A
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Nopco Chemical Co
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Nopco Chemical Co
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Publication date
Application filed by Nopco Chemical CofiledCriticalNopco Chemical Co
Publication of GB866398ApublicationCriticalpatent/GB866398A/en
C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
C07B2200/00—Indexing scheme relating to specific properties of organic compounds
C07B2200/09—Geometrical isomers
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Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
4- Methyl- 6- [21,61, 61- trimethylcyclohexen11-yl]-hexa-3,5-dien-1-yne is obtained in a process which comprises heating at a temperature between 70 DEG C. and 250 DEG C. a solution of 4-methyl- 6- [21,61,61 trimethylcyclohexen-11-yl]-hex-5-en-1-yn-4-ol in an inert solvent, in the presence of cupric sulphate. As solvent there may be employed benzene, toluene, ethyl benzene, hexane and petroleum ether. Specifications 1557/1912, 664,815 and 755,079 are referred to.
GB4905/60A1959-04-021960-02-11Preparation of vitamin a intermediate
ExpiredGB866398A
(en)