Synthetic Route of 105827-91-6, Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. 105827-91-6, C4H3Cl2NS. A document type is Patent, introducing its new discovery.
A method for the preparation of thiamethoxam (by machine translation)
The invention discloses a method for the preparation of thiamethoxam, in the reactor is sequentially added in the metering of the solvent, 3 – methyl – 4 – nitryl asia ammonia – 1, 3, 5 – oxadiazine, potassium carbonate and catalyst, stirring, so that the materials can be mixed uniformly, and up to 25 – 35 C; to 40 – 60 ml/h speed dropping 2 – chloro – 5 – chloromethyl-thiazole with the solvent mixture to the above in the reaction system, the control temperature is not higher than 35 C, 2 – chloro – 5 – chloromethyl-thiazole with the solvent mixture after the completion of the dropping, stirring the reaction 8 – 16 h, the reaction is complete; heated to 65 – 70 C, filter when rock salt; cooling to 0 – 5 C crystallization is filtered to obtain the filtrate and filter cake, the filtrate is treated mechanically, the filter cake washing twice with methanol, vacuum drying, to obtain the original drug thiamethoxam. The invention reduces a large number of follow-up, so that the reaction of the thiamethoxam can achieve the highest yield of 92% or more, the content of 98% of the left and right, and thereby greatly reducing the generation of waste water. (by machine translation)
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Reference：
Thiazole | C3H2907NS – PubChem,
Thiazole | chemical compound | Britannica