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Expired
Application number
GB1762/58A
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BASF Schweiz AG
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Ciba AG
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Publication of GB883796ApublicationCriticalpatent/GB883796A/en
C07C43/00—Ethers; Compounds having groups, groups or groups
C07C43/02—Ethers
C07C43/20—Ethers having an ether-oxygen atom bound to a carbon atom of a six-membered aromatic ring
C07C43/215—Ethers having an ether-oxygen atom bound to a carbon atom of a six-membered aromatic ring having unsaturation outside the six-membered aromatic rings
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Chemical & Material Sciences
(AREA)
Organic Chemistry
(AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
The invention comprises compounds of the formula <FORM:0883796/IV (b)/1> (wherein R is a hydrogen atom or an alkyl or carboxylic acid acyl group and R1 is a hydrogen atom or a methyl group) and their 7-ketals and 7-enol ethers, and their preparation by combining, in a moist medium in the presence of an organic base, a compound of the formula <FORM:0883796/IV (b)/2> or a corresponding 7-ketal or 7-enol ether, with methyl vinyl ketone or methyl isopropenyl ketone, and, if desired, esterifying or etherifying the products. Examples are given, a by product of the reaction of methyl vinyl ketone with the 7-ethylene ketal of the compound of the second formula above being D -8a-1-oxo-2-(gamma-oxobutyl) - 4b - hydroxy - 4bb - methyl - 7 - ethylenedioxy-4aa : 10ab -dodecahydrophenanthrene.
GB1762/58A1957-01-251958-01-17New polyhydrophenanthrene compounds and process for their manufacture
ExpiredGB883796A
(en)
Procedure for the manufacture of spyrocyclic polycetons and anholic esters and anholic esters of the same (Machine-translation by Google Translate, not legally binding)