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
GB1951920A
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.)
Hoechst AG
Original Assignee
Hoechst 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
Application filed by Hoechst AGfiledCriticalHoechst AG
Priority to GB1951920ApriorityCriticalpatent/GB160433A/en
Publication of GB160433ApublicationCriticalpatent/GB160433A/en
C07D261/00—Heterocyclic compounds containing 1,2-oxazole or hydrogenated 1,2-oxazole rings
C07D261/20—Heterocyclic compounds containing 1,2-oxazole or hydrogenated 1,2-oxazole rings condensed with carbocyclic rings or ring systems
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Chemical & Material Sciences
(AREA)
Organic Chemistry
(AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
The process described in the parent Specification is effected in the absence of air, whereby products of greater purity are obtained; according to an example, 1-nitro-2-methylanthraquinone is treated with fuming sulphuric acid in an atmosphere of carbon dioxide.
GB1951920A1920-07-081920-07-08Manufacture of anthraquinone derivatives
ExpiredGB160433A
(en)