申请人:Shionogi & Co., Ltd.
公开号:US04212981A1
公开(公告)日:1980-07-15
3-Isoxazolylurea derivatives of the formula: ##STR1## (wherein R represents hydrogen, C.sub.1 -C.sub.6 alkyl, or C.sub.6 -C.sub.8 aryl; R.sup.1 represents hydrogen or C.sub.1 -C.sub.6 alkyl; R.sup.2 represents C.sub.1 -C.sub.6 alkyl, C.sub.6 -C.sub.8 aralkyl, or C.sub.6 -C.sub.8 aryl; or ##STR2## represents pyrrolidino, piperidino, morpholino, or 4-alkylpiperazino; X represents hydrogen or halogen; or R and X may optionally form C.sub.3 -C.sub.5 alkylene), are prepared by reacting a carboxamide of the formula: ##STR3## (wherein R and X each is as defined above) with an amine of the formula: R.sup.1 --NH--R.sup.2 (wherein R.sup.1 and R.sup.2 each is as defined above) in the presence of an alkaline hypohalite and an alkaline hydroxide in an inert solvent medium.
3-异噁唑基脲衍生物的化学式:##STR1##(其中R代表氢、C.sub.1 -C.sub.6烷基或C.sub.6 -C.sub.8芳基;R.sup.1代表氢或C.sub.1 -C.sub.6烷基;R.sup.2代表C.sub.1 -C.sub.6烷基、C.sub.6 -C.sub.8芳基烷基或C.sub.6 -C.sub.8芳基;或##STR2##代表吡咯啉基、哌啶基、吗啉基或4-烷基哌嗪基;X代表氢或卤素;或R和X可以选择性地形成C.sub.3 -C.sub.5烷基),通过在惰性溶剂介质中,在碱性次氯酸盐和碱性氢氧化物存在下,将化学式为:##STR3##(其中R和X各自如上所述)的羧酰胺与化学式为:R.sup.1 --NH--R.sup.2(其中R.sup.1和R.sup.2各自如上所述)的胺反应制备而成。