| 摘要 |
NEW MATERIAL:A compound shown by the formula I [R is group shown by the formula II, formula III (R<1> is lower alkoxy, phenyl-substituted lower alkoxy, or phenyl; R<2> is lower alkyl, or phenyl), -S-R<3> (R<3> is phenyl-substituted lower alkyl, phenyl, etc.), or -SO2-R<4> (R<4> is phenyl-substituted lower alkyl or phenacyl)]. EXAMPLE:Diethylpiperazinylamido phosphorate. USE:Useful as a raw material for producing pipemidic acid, norfloxacin, enoxacin, etc., antibacterial agents. PREPARATION:Piperazine is reacted with a compound shown by the formula R-H, to give a compound shown by the formula I. |
