ACETYLENE CARBAMIDE DERIVATIVES, PROCESSES FOR THEIR PRODUCTION, AND ANTIOXIDANTS FOR ORGANIC SUBSTANCES WHICH COMPRISE SUCH DERIVATIVES AS ACTIVE INGREDIENTS

摘要

ABSTRACT OF THE DISCLOSUREAn acetylene carbamide derivative of thegeneral formula (I): (I)wherein A represents , wherein R1 represents ahydrogen atom or ar. alkyl group having 1 to 4 carbonatoms, is disclosed. A process for producing theacetylene carbamide derivative of the general formula(I) is also disclosed. The acetylene carbamide deriva-tive of the invention is useful as a stabilizer fororganic substances from hunt and oxidation.