CHEMICAL PROCESS FOR PREPARATION OF 1,2-EPOXY-1,2,3,4-TETRAHYDRNAPHTALENE
    1.
    发明授权
    CHEMICAL PROCESS FOR PREPARATION OF 1,2-EPOXY-1,2,3,4-TETRAHYDRNAPHTALENE 失效
    CHEMISCHE PROZESSE ZUR HERSTELLUNG VON 1,2-EPOXY-1,2,3,4-TETRAHYDRNAPHTALEN

    公开(公告)号:EP0686153B1

    公开(公告)日:1997-06-04

    申请号:EP94906331.7

    申请日:1994-02-16

    申请人: ZENECA LIMITED

    摘要: A process for the preparation of (1S,2R)-1,2-epoxy-1,2,3,4-tetrahydronaphthalene having formula (I), which comprises the steps of (a) hydrogenating the compound of formula (II) to form c^_i^_s^_-(1R,2S)-1,2-dihydroxy-1,2,3,4-tetrahydronaphthalene having formula (V); (b) reacting the dihydroxy compound of formula (V) with a sulphonyl halide of formula R1SO2Z wherein R1 is methyl, ethyl, trifluoromethyl, phenyl or p^_-tolyl, and Z is fluorine, chlorine, bromine or iodine to give a bis-sulphonyl ester of formula (X); and (c) treating the bis-sulphonyl ester (X) with an alkali metal carbonate or alkali metal hydroxyde to give the compound of formula (I). A process for preparing the enantiomeric (1R,2S)-1,2-epoxy-1,2,3,4-tetrahydronaphthalene is also claimed as are novel intermediates formed in the processes. The compounds are useful as intermediates in the preparation of biologically active compounds such as pharmaceuticals.

    摘要翻译: PCT No.PCT / GB94 / 00307 Sec。 371日期:1995年8月25日 102(e)日期1995年8月25日PCT 1994年2月26日PCT PCT。 WO94 / 19338 PCT出版物 日本1994年9月1日描述了制备具有式(I)的(1S,2R)-1,2-环氧-1,2,3,4-四氢化萘的方法:其中式 包括以下步骤:(a)将式(II)化合物氢化以形成具有式(Ⅴ)的顺式 - (1R,2S)-1,2-二羟基-1,2,3,4-四氢化萘: (b)使式(V)的二羟基化合物与式R 1 SO 2 Z的磺酰卤反应,其中R 1是甲基,乙基,三氟甲基,苯基或对甲苯基,Z是氟,氯,溴或碘,得到双磺酰基 式(X)的酯:< IMAGE>和(c)用碱金属碳酸盐或碱金属氢氧化物处理双磺酰基酯(X),得到式(I)的化合物。