PROCESS FOR THE PREPARATION OF EFAVIRENZ
    7.
    发明申请
    PROCESS FOR THE PREPARATION OF EFAVIRENZ 审中-公开
    制备EFAVIRENZ的方法

    公开(公告)号:US20130165650A1

    公开(公告)日:2013-06-27

    申请号:US13777817

    申请日:2013-02-26

    IPC分类号: C07D265/18 C07C215/70

    CPC分类号: C07D265/18

    摘要: A process for the preparation of Efavirenz, (4S)-6-chloro-4-(cyclopropylethynyl)-4-(trifluoromethyl)-1,4-dihydro-2H-3,1-benzoxazin-2-one, of formula (I): comprising reacting the intermediate of formula (II): as a free base or a salt thereof, with diphosgene (TCMCF, trichloromethylchloroformate) Cl3CO—COCl in an organic solvent or in a biphasic medium comprised of an organic solvent and water, preferably but not mandatorily in the presence of a weak base in an amount sufficient to neutralize the reaction mixture or in an up to 30% molar excess of such amount.

    摘要翻译: 制备式(I)的依法韦伦,(4S)-6-氯-4-(环丙基乙炔基)-4-(三氟甲基)-1,4-二氢-2H-3,1-苯并恶嗪-2-酮的方法 ):包括使式(II)的中间体:游离碱或其盐与有机溶剂中的双光气(TCMCF,氯甲酸三氯甲酯)Cl 3 CO-COCl反应或由有机溶剂和水组成的双相介质中,优选但不限于 在弱碱存在下,强度不足以中和反应混合物或以高达30%摩尔过量的量存在。