Process for the production of 1-substituted-5(4H)-tetrazolinones
    12.
    发明授权
    Process for the production of 1-substituted-5(4H)-tetrazolinones 失效
    制备1-取代-5(4H) - 四唑啉酮的方法

    公开(公告)号:US5530135A

    公开(公告)日:1996-06-25

    申请号:US283103

    申请日:1994-07-29

    CPC分类号: C07D257/04

    摘要: 1-Substituted-5(4H)-tetrazolinones of the formula (I) ##STR1## wherein R is alkyl, haloalkyl, cycloalkyl, phenyl, substituted phenyl or aralkyl, are obtained in very good yields by reacting, in a polar solvent, an isocyanate of the formula R-NCO (II) with sodium azide (NaN.sub.3) in a molar ratio of 1:1 and in the presence of aluminum chloride (AlCl.sub.3), followed by the addition of water and a mineral acid in excess.

    摘要翻译: 式(I)的1-取代的5(4H) - 四唑啉酮其中R是烷基,卤代烷基,环烷基,苯基,取代的苯基或芳烷基,以非常好的收率通过在极性 溶剂,式R-NCO(II)的异氰酸酯与叠氮化钠(NaN 3)摩尔比为1:1,在氯化铝(AlCl 3)存在下,然后加入过量的水和无机酸 。