| 简介 |
FIELD : chemistry.SUBSTANCE : invention relates to a method of producing 1, 7-bis[4(5)-methyl-1, 3-thiazol-2-yl]-3, 5-dithia-1, 7-diazaheptanes of general formula (1), which can be used in organic synthesis to produce macro-heterocyclic rings, as well as sorbents and extraction agents for precious and rare-earth metals. The method is realised by reacting hydrogen sulphide-saturated aqueous formaldehyde solution (37%) with 2-amino-4(5)-methylthiazole with molar ratio of initial reagents 2-amino-4(5)-methylthiazole : formaldehyde : hydrogen sulphide equal to 20 : 30 : 20, at temperature -5-5°C and atmospheric pressure for 8-12 hours.EFFECT : improved method. |
客服热线：
手机版
二维码
