2-Thio-5-amino substituted benzoquinones, their manufacture and their use in rubber
申请人:——
公开号:US20020128499A1
公开(公告)日:2002-09-12
The invention comprises a process for preparing a compound having the formula comprising:
1
where Z and W are the same or different, and selected from the group consisting of O, NH and NR, where R is H, alkyl, cycloalkyl or aryl, R′ is alkyl, cycloalkyl, alkylene, alkyl 3-propionate, aryl or arylene. A is H if either or both of Z and W are not O, but if both Z and W are O, A is:
2
or a carbon based heterocyclic component having an amine constituent, or RR″N-, where R″ is the same or different than R and is selected from the same group as R. The process comprises preparing an alkylthio-substituted benzoquinone intermediate by reacting in a first reaction mixture a thio-substituted aromatic having the formula:
3
where X is OH, NH
2
or NHR when Z is O, NH or NR, respectively, and where Y is OH, NH
2
or NHR when W is O, NH or NR, respectively, with an alkali metal periodate in the presence of a phase transfer catalyst, followed, if A is not H, by reacting the intermediate in a second reaction mixture containing an amine included in the group of amines comprising A, and in the presence of oxygen to obtain the compound. If A is H no second reaction mixture is employed and the intermediate comprises the compound. The invention includes a process for making the composition and the use of the composition in natural and synthetic rubber, and with monomers, gasoline and lubricating oil to inhibit polymerization.
该发明涉及一种制备具有以下式的化合物的过程:1其中Z和W相同或不同,选择自O,NH和NR的组,其中R为H,烷基,环烷基或芳基,R'为烷基,环烷基,烷基3-
丙酸酯,芳基或
芳烃基。如果Z和W中的任意一个或两个不是O,则A为H,但如果Z和W都是O,则A为:2或具有胺基组分的碳基杂环组分,或RR″N-,其中R″与R相同或不同,并选择自与R相同的组中的烷基,环烷基或芳基。该过程包括通过在第一反应混合物中反应具有以下式的
硫代取代芳香族物质制备烷基
硫代苯醌中间体:3其中当Z为O,NH或NR时,X为OH,NH2或NHR,而当W为O,NH或NR时,Y为OH,NH2或NHR,并在相转移催化剂的存在下与碱
金属
碘酸盐反应,如果A不是H,则通过在第二反应混合物中反应中间体以及属于包括A的胺基组的胺的存在下,并在
氧气的存在下获得化合物。如果A为H,则不使用第二反应混合物,并且中间体包括化合物。该发明包括制备该组合物的过程以及在天然和合成橡胶中使用该组合物,并与单体,汽油和润滑油一起抑制聚合的用途。