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.)
Hercules Powder Co
Original Assignee
Hercules Powder Co
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 Hercules Powder CofiledCriticalHercules Powder Co
Priority to ES0303783ApriorityCriticalpatent/ES303783A2/en
Publication of ES303783A2publicationCriticalpatent/ES303783A2/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Improvements introduced in the object of the main patent number 297,346, that is in a method for preparing a norbornyl-substituted urea compound of the formula: ** (See formula) ** wherein R, R1, and R2, when taken as individual radicals, are hydrogen, chlorine, bromine, alkyl radicals having 1 to 4 carbon atoms or chloromethyl, and when taken as a group, R2 is hydrogen, and R and R1 taken together represent a divalent linkage of the group consisting of a chemical ligation, CH2CH = CH-, and CH2CHCl-CHCl-, and R3 and R4 are selected from the group consisting of alkyl radicals having from 1 to 8 carbon atoms. carbon, characterized in that said method comprises contacting a thiourea compound of the formula: ** (See formula) ** step by step with phosgene in a water-free organic solvent at a temperature in the range of 0 to 80º C, and then with water in an aqueous medium at a temperature in the range of 0 to 100º C, and recovering the urea compound thus obtained . (Machine-translation by Google Translate, not legally binding)
ES0303783A1964-09-051964-09-05A method for preparing a urea compound. (Machine-translation by Google Translate, not legally binding)
ExpiredES303783A2
(en)
A procedure for the preparation of new nitrogenated compounds, especially with spasmolitic action. (Machine-translation by Google Translate, not legally binding)