首页>
外国专利>
2-Thio-morpholino-benzothiazole prodn. - from 2-mercapto-benzothiazole, or corresp. di:sulphide, and excess morpholine, useful vulcanisation accelerator, fungicide and antioxidant
2-Thio-morpholino-benzothiazole prodn. - from 2-mercapto-benzothiazole, or corresp. di:sulphide, and excess morpholine, useful vulcanisation accelerator, fungicide and antioxidant
Prodn. of 2-thiomorpholino-benzothiazole of formula (I) comprises reacting 2-mercaptobenzothiazole (IIa) or dibenzthiazolyl disulphide (IIb) with =8 times the stoichiometric amt. of morpholine using H2O2 as oxidising agent. The initial concn. of water in the reaction mixt. is not 15, esp. 10 wt.% Pref. 9-25 molar excess morpholine is used and the water content of the H2O2 used is not 85 wt.% using (IIa) or 95 wt.% using (IIb). Pref. the prod. is isolated (a) by evapn. of solvent down to solvent reaction prod. wt. ratio 1:1, or (b) by dissolving the mixt. in a water-immiscible solvent then extracting the morpholine with water. (I) is a known vulcanisation accelerator, soil fungicide and antioxidant for lube oils and polyolefins. Large excesses of morpholine improve the yield and water is the only by-prod.
展开▼
机译：产品式（I）的2-硫代吗啉代-苯并噻唑的“反应”包括使2-巯基苯并噻唑（IIa）或二苯并噻唑基二硫化物（IIb）与化学计量的amt≥8倍反应。 H2O2作为氧化剂合成吗啉初始浓度反应混合物中的水。不大于15，尤其是。 10 wt。％首选使用9-25摩尔过量的吗啉，并且使用（IIa）使用的H 2 O 2的水含量不大于85wt。％或使用（IIb）使用不超过95wt。％。首选产品。被（eva）隔离。将溶剂降至溶剂反应产物。重量比例为1：1，或（b）溶解混合物。在与水不混溶的溶剂中，然后用水萃取吗啉。 （I）是已知的用于润滑油和聚烯烃的硫化促进剂，土壤杀真菌剂和抗氧化剂。大量过量的吗啉会提高产量，水是唯一的副产品。
展开▼
