ES265402A1 - A procedure for preparing derivatives substituted by nitrogen (Machine-translation by Google Translate, not legally binding)
- Google Patents
A procedure for preparing derivatives substituted by nitrogen (Machine-translation by Google Translate, not legally binding)
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.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid 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 American Cyanamid CofiledCriticalAmerican Cyanamid Co
Priority to ES0265402ApriorityCriticalpatent/ES265402A1/en
Publication of ES265402A1publicationCriticalpatent/ES265402A1/en
Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms
(AREA)
Abstract
A process for preparing 5-aryl-2-amino-2-oxazolin-4-ones of the general formula ** (See formula) ** where X is hydrogen or halogen and when X is halogen, then R1 and R2 are the same or different and are hydrogen atoms or lower alkyl radicals; and when X is hydrogen, then R1 and R2 are the same or different lower alkyl groups; and tautomers thereof; and the non-toxic salts thereof by addition of acid, characterized by cyclizing a phenylacetic acid derivative of the following general formula: ** (See formula) ** where: (1) K is (see formula), where Z is O when Y is halogen or sulfonyloxy and Z is NH or S and when Y is OH, or (2) K is -NHCN and Y is OH, or (3) K is (see formula), where R3 and R4 are hydrogen atoms, aryl or aryl groups or -OR5 where R5 is an alkyl or aryl group and Y is (see formula); and R1, R2 and X are as defined above, and if desired, form the non-toxic salts by addition of acid. (Machine-translation by Google Translate, not legally binding)
ES0265402A1961-03-041961-03-04A procedure for preparing derivatives substituted by nitrogen (Machine-translation by Google Translate, not legally binding)
ExpiredES265402A1
(en)
A procedure for preparing derivatives of 4-oxo-6-sulfamil - 1,2,3,4- tetrahidroquinazolinona (Machine-translation by Google Translate, not legally binding)