CIS-dihydroxycyclohexadienes and their preparation
    5.
    发明授权
    CIS-dihydroxycyclohexadienes and their preparation 失效
    CIS-二羟基环己二烯及其制备方法

    公开(公告)号:US5763689A

    公开(公告)日:1998-06-09

    申请号:US605145

    申请日:1996-02-29

    摘要: This application relates to 3-substituted and 4-substituted cis-diols. Specifically, there are provided 3-substituted diols of formula (II) and 4-substituted cis-diols having (1S, 2R) and (1R, 2S) absolute configurations of formulae (III) and (IV). Also provided are processes For making such 3- and 4-substituted cis-diols using a reductive fission reaction. The compounds described herein are useful as synthons for the preparation of various compounds including therapeutics, agricultural, polymers and other classes of compounds. In formulae (II, III and IV), R is halogen, CN, aryl alkyl, alkenyl alkynyl O-alkyl, CF.sub.3 or NO.sub.2.

    摘要翻译: PCT No.PCT / GB94 / 01940 Sec。 371日期1996年2月29日 102(e)日期1996年2月29日PCT 1994年9月7日PCT公布。 公开号WO95 / 07253 日期1995年3月16日本申请涉及3-取代和4-取代的顺式二醇。 具体地,提供式(II)的3-取代二醇和具有式(III)和(IV)的(1S,2R)和(1R,2S)绝对构型的4-取代的顺式二醇。 还提供了使用还原裂变反应制备这种3-和4-取代的顺式二醇的方法。 本文所述的化合物可用作制备包括治疗剂,农业,聚合物和其它类别化合物在内的各种化合物的合成子。 在式(II,III和IV)中,R是卤素,CN,芳基烷基,烯基炔基-O-烷基,CF 3或NO 2。

    Process for the preparation of nitroolefins
    7.
    发明授权
    Process for the preparation of nitroolefins 失效
    制备硝基烯烃的方法

    公开(公告)号:US4861925A

    公开(公告)日:1989-08-29

    申请号:US219682

    申请日:1988-07-15

    申请人: Jennifer M. Quirk

    发明人: Jennifer M. Quirk

    摘要: A process for the preparation of nitroolefins which comprises heating a solution of a nitroalcohol of the formula: ##STR1## to at least 125.degree. C. to give a corresponding nitroolefin which is contacted in situ with nucleophilic addition reagent.

    摘要翻译: 一种制备硝基烯烃的方法,其包括将下式的硝基醇溶液加热至至少125℃,得到相应的与亲核加成试剂原位接触的硝基烯烃。