69045-78-9Relevant articles and documents
Synthesis, characterization and crystal structure of 2,3,6-trichloro-5- (trichloromethyl)pyridine
Zhu, Xue-Mei,Cai, Zhao-Sheng,Zhang, Huai-Hong,Sun, Ming-Zhu
, p. 110 - 112 (2014)
2,3,6-Trichloro-5-(trichloromethyl)pyridine (TCTCMP) was synthesized from 2-chloro-5-chloromethyl pyridine (CCMP) through two-steps chloridization using chlorine as chlorizating agent. Initially, 2-chloro-5-chloromethyl pyridine was chloridized for 8 h at reflux conditions in the presence of ultraviolet and transformed into 2-chloro-5-(trichloromethyl)pyridine (CTCMP), then CTCMP was chloridized for 6 h at 175 °C with WCl6 as catalyst. The product was characterized by FT-IR, NMR and elemental analysis. The crystal structure of TCTCMP was investigated using X-ray diffraction and SHELXTL97 software and the result indicated that TCTCMP crystallized in the orthorhombic system, space group Pbcm with a = 8.3100(17), b = 17.018 (3), c = 7.3160(15) A, V = 1034.6 (4) A3; Z 4.
2-chloro-5-trichloromethyl pyridine rectification purification method and device
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Paragraph 0019-0030, (2019/10/17)
The invention discloses a 2-chloro-5-trichloromethyl pyridine rectification purification method and device. Rectification purification of 2-chloro-5-trichloromethyl pyridine is implemented by using adevice for rectification purification of 2-chloro-5-trichloromethyl pyridine. By adopting the device for rectification purification of the 2-chloro-5-trichloromethyl pyridine, purification of a crudeproduct of 2-chloro-5-trichloromethyl pyridine can be efficiently implemented, the device is simple in structure and low in cost, and together with a purification method for the crude product of the 2-chloro-5-trichloromethyl pyridine, the purification rate of the crude product of the 2-chloro-5-trichloromethyl pyridine can be greatly increased.
A 2 - chloro -5 - nitrapyrin preparation method
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Paragraph 0037-0038, (2019/03/15)
The invention discloses a 2 - chloro - 5 - trichloromethyl pyridine method, comprises the following steps: (1) the 3 - methyl pyridine is mixed with a solvent, the vaporization of the drops in the vaporization vessel, then in order to inert gas as a carrier gas, to form raw material steam; (2) dry Cl respectively2 The raw material and the steam is sent to the quartz tube catalyst [...] generating vapor phase chlorination reaction, reaction material after the condensation, rectification to obtain 2 - chloro - 5 - trichloromethyl pyridine. The invention relates to a 2 - chloro - 5 - trichloromethyl pyridine method, with raw materials are easy, low cost, easy to operate, simple process and the like.