A halide salt of a 1-(hydroxyiminomethyl-1-pyridino)-3-(halomethyl)-2-oxapropane is prepared by adding a pyridinealdoxime to a bis-halomethylether in such a manner that the bis-halomethylether is maintained in excess throughout the addition. This procedure produces the halide salt of a 1-(hydroxyiminomethyl-1-pyridino)-3-(halomethyl)-2-oxapropane in high yield and purity, which facilitates its use as an intermediate in the manufacture of an asymmetrically substituted 1,3-di (1-pyridino)-2-oxapropane, a class of compounds that are generally useful antidotes to various toxic agents. A prominent member of the class is the dimethylsulfonate salt of 1-(2-hydroxyiminomethyl-1-pyridino)-3-(4-carbamoyl-1-pyridino)-2-oxapropane. The use of mercaptoalkyl-functionalized polymers is disclosed as a preferred metal ion scavenger for a final purification step in the manufacture of these compounds.
一种1-(羟基
亚胺甲基-1-
吡啶基)-3-(卤代甲基)-2-氧
丙烷的卤化物盐是通过将
吡啶醛
肟加入双(卤代甲基)醚中以使双(卤代甲基)醚在加入过程中始终保持过量来制备的。这个过程以高收率和纯度产生了1-(羟基
亚胺甲基-1-
吡啶基)-3-(卤代甲基)-2-氧
丙烷的卤化物盐,这便于其作为中间体用于制造不对称取代的1,3-二(1-
吡啶基)-2-氧
丙烷,这类化合物通常用作对各种有毒物质的通用解毒剂。这类化合物的一个突出成员是1-(2-羟基
亚胺甲基-1-
吡啶基)-3-(4-碳酰胺基-1-
吡啶基)-2-氧
丙烷的二
甲磺酸盐。在制造这些化合物的最后纯化步骤中,推荐使用巯基烷基功能化的聚合物作为首选的
金属离子清除剂。