| 摘要 |
Production of cyclic 4-oxoamidines (I) comprises oxidizing or dehydrogenating 1,3-diazacycloalkan-4-ones (II). Production of cyclic 4-oxoamidines of formula (I) or their salts comprises oxidizing or dehydrogenating 1,3-diazacycloalkan-4-ones of formula (II) or their salts: R<1>, R<2> = H; 1-8C alkyl, 2-8C alkenyl, 2-8C alkynyl, 1-8C alkoxy or 2-8C alkoxyalkyl, optionally substituted by halogen and/or N-, O- or P-containing groups; 3-7C (un)saturated cycloalkyl optionally substituted by 1-8C alkyl, 2-8C alkenyl, 1-8C alkoxy or 2-8C alkoxyalkyl, halogen and/or N-, O- or P-containing groups and optionally containing heteroatoms (e.g. N, O or P) in the ring; or aryl, aralkyl, heteroaryl or heteroaralkyl optionally substituted by 1-8C alkyl, 2-8C alkenyl, 1-8C alkoxy or 2-8C alkoxyalkyl, halogen and/or N-, O- or P-containing groups; or CR<1>R<2> is a 3- to 7-membered (un)saturated carbocyclic or heterocyclic ring optionally substituted by 1-8C alkyl, 2-8C alkenyl, 1-8C alkoxy or 2-8C alkoxyalkyl, halogen and/or N-, O- or P-containing groups; R<3>-R<5> = H; 1-8C alkyl, 2-8C alkenyl, 2-8C alkynyl, 1-8C alkoxy or 2-8C alkoxyalkyl, optionally substituted by halogen and/or N-, O- or P-containing groups; 3-7C (un)saturated cycloalkyl optionally substituted by 1-8C alkyl, 2-8C alkenyl, 1-8C alkoxy or 2-8C alkoxyalkyl, halogen and/or N-, O- or P-containing groups and optionally containing heteroatoms (e.g. N, O or P) in the ring; or aryl, aralkyl, heteroaryl or heteroaralkyl optionally substituted by 1-8C alkyl, 2-8C alkenyl, 1-8C alkoxy or 2-8C alkoxyalkyl, halogen and/or N-, O- or P-containing groups, provided that at least one of R<3> and R<5> is H; n = 1-3; bonds a, b = optional double bonds.
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