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
GB13923/57A
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.)
Merck and Co Inc
Original Assignee
Merck and Co Inc
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 Merck and Co IncfiledCriticalMerck and Co Inc
Publication of GB835599ApublicationCriticalpatent/GB835599A/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Ethyl and methyl N-(5-nitro-2-thiazolyl) carbamate are prepared by bringing a solution of ethyl or methyl N-(2-thiazolyl) carbamate (obtained by reaction 2-aminothiazole with an ethyl or methyl haloformate) in concentrated sulphuric acid into contact with nitric acid at a temperature of -10 DEG C. to +10 DEG C.
GB13923/57A1956-05-141957-05-01Production of thiazole compounds
ExpiredGB835599A
(en)
Process for the transformation of substituted amides of l-isolysergic and l-lysergic acids into corresponding derivatives of d-isolysergic and l-lysergic acids