Process for the preparation of hydroxylamine ethers and their salts and
intermediates for this purpose
    2.
    发明授权
    Process for the preparation of hydroxylamine ethers and their salts and intermediates for this purpose 失效
    为此目的制备羟胺醚及其盐和中间体的方法

    公开(公告)号:US5684200A

    公开(公告)日:1997-11-04

    申请号:US454371

    申请日:1995-06-06

    CPC分类号: C07C251/54

    摘要: Hydroxylamine ethers I ##STR1## (where X is NO.sub.2, CN, halogen, alkyl or haloalkyl, Y is H, NO.sub.2, CN, halogen, alkyl or haloalkyl, n is 0-2 or 1-4 where Y and all radicals X are halogen and Alk is unsubstituted or substituted alkylene) and their salts with mineral acids or strong organic acids are prepared by reacting either a hydroximino compound II ##STR2## (where R.sup.1 is alkyl, R.sup.2 is alkyl or alkoxy or R.sup.1 +R.sup.2 form an alkylene chain) in the presence of an alkali metal hydroxide, alkali metal alcoholate, alkali metal bicarbonate or alkali metal carbonate as the base, or the corresponding anion II directly, with an alkylating agent III ##STR3## (where R.sup.3 is unsubstituted or substituted alkyl or unsubstituted or substituted phenyl) to give an oximino derivative IV ##STR4## said derivative is cleaved by means of a mineral acid or a strong organic acid to give the salt of I and, if desired, the latter is converted by means of a base into the free compound I. The hydroxylamine ethers I are intermediates for crop protection agents and drugs.

    摘要翻译: PCT No.PCT / EP93 / 03597 371日期:1995年6月6日 102(e)日期1995年6月6日PCT提交1993年12月17日PCT公布。 第WO94 / 14757号公报 日期:1994年7月7日羟胺醚I(其中X为NO 2,CN,卤素,烷基或卤代烷基,Y为H,NO 2,CN,卤素,烷基或卤代烷基,n为0-2或1-4) Y和所有基团X是卤素,Alk是未取代的或取代的亚烷基),并且它们与无机酸或强有机酸的盐通过氢肟基化合物II(其中R 1是烷基,R 2是烷基或烷氧基或 R1 + R2形成亚烷基链)在碱金属氢氧化物,碱金属醇盐,碱金属碳酸氢盐或作为碱的碱金属碳酸盐或相应的阴离子II的存在下,与烷基化剂III(III R3是未取代或取代的烷基或未取代或取代的苯基),得到肟基衍生物IV所述衍生物通过无机酸或强有机酸裂解,得到I的盐,如果需要,将后者 通过碱转化为游离化合物I.羟基 氯胺醚我是作物保护剂和药物的中间体。

    Preparation of O-(2-hydroxyalkyl)oximes
    4.
    发明授权
    Preparation of O-(2-hydroxyalkyl)oximes 失效
    O-(2-羟基烷基)肟的制备

    公开(公告)号:US5739400A

    公开(公告)日:1998-04-14

    申请号:US776579

    申请日:1997-02-03

    CPC分类号: C07C249/12

    摘要: Preparation of O-(2-hydroxyalkyl)oximes I ##STR1## (R.sup.1 and R.sup.2 =alkyl or R.sup.1 and R.sup.2 and the C atom which carries them=5- to 7-membered cycloalkyl), by catalytically hydrogenating an O-(2,3-epoxyalkyl)oxime of the general formula II ##STR2## using hydrogen. The products I are suitable as intermediates for herbicides.

    摘要翻译: PCT No.PCT / EP95 / 02932 Sec。 371日期1997年2月3日 102(e)日期1997年2月3日PCT提交1995年7月25日PCT公布。 公开号WO96 / 04237 日期1996年2月15日O-(2-羟基烷基)肟I(I)(R1和R2 =烷基或R1和R2以及携带它们的C原子为5-至7-元环烷基)的制备,由 使用氢催化氢化通式II(O)的O-(2,3-环氧烷基)肟。 产品I适合作为除草剂的中间体。