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.)
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries LtdfiledCriticalImperial Chemical Industries Ltd
Publication of ES301968A1publicationCriticalpatent/ES301968A1/en
Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms
(AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Process for the manufacture of urea derivatives, characterized in that it comprises the interaction of a compound of the formula X.NCO, in which X represents a substituted aryl radical, and a compound of the formula ** (See formula) ** wherein R represents hydrogen or an optionally substituted alkyryl, cycloalkyl, alkenyl, aralkyl, aralkenyl or aryl radical, or a salt thereof, and wherein ring A may be optionally substituted. (Machine-translation by Google Translate, not legally binding)
ES0301968A1964-07-121964-07-11Procedure for the manufacture of urea derivatives. (Machine-translation by Google Translate, not legally binding)
ExpiredES301968A1
(en)
A procedure for preparing dihydrovimblastine, dihydrovincristine or dihydrodesmetilvinblastina. (Machine-translation by Google Translate, not legally binding)
A procedure for the quick alkaline polymerization of lactamas with the help of catalysts of a single component. (Machine-translation by Google Translate, not legally binding)