专利名称：Process for the preparation of substituted
aminoanthraquinones
发明人：KALZ, DIETMAR, DR.,REINHARDT, KARL-HEINZ
申请号：EP97114338.3申请日：19970820公开号：EP0826739A1公开日：19980304
摘要：The preparation of N-alkyl 1-amino-anthraquinones (I) of formula (A; W = R1) byreacting 1-amino-anthraquinones (II) of formula (A; W = hydrogen (H)) with alkylatingagents in organic solvents in the presence of alkali is carried out in the presence ofpolyethers (III) with a number average molecular weight (Mn) NOTLESS 200 g/mole. R1 =optionally substituted 1-6 C alkyl; X = H, -COR2 or -SO2R3; R2, R3 = optionally substituted1-4 C alkyl or 6-12 C aryl; Y, Z = halogen, nitro or 1-4 C alkyl; n = 0-4, especially 0 or 1; m= 0-3, especially 0 or 1.
申请人：BAYER AG
地址：51368 Leverkusen DE
国籍：DE
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