2,2-Difluoroethanol CAS 359-13-7
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- Appearance: Colorless liquid
- Assay: 99. 0%min
- Stock: In stock
- Sample: Available
2,2-Difluoroethanol: The Complete Guide
Index of 2,2-Difluoroethanol Contents
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Basic Info of 2,2-Difluoroethanol
What is 2,2-Difluoroethanol?
The chemical name of difluoroethanol is 2,2-difluoroethanol, which is an important aliphatic fluorine-containing intermediate. Acidic and phenol equivalent, soluble in water, acid, ethanol, ether and other solvents, toxic. Stable in nature. Due to the special structure containing difluoromethyl, its chemical properties are different from other alcohols, and it can participate in various organic synthesis reactions, especially in fluorine-containing pesticides, medicines, fluoropolymers and cleaning agents. It has a wide range of uses , the domestic and foreign demand for it is gradually increasing.
Aliphatic fluorine-containing intermediates are mainly used in the synthesis of surfactants, fabric finishing agents, synthetic raw materials and solvents for new medicines and pesticides, synthetic raw materials and auxiliaries for new materials, and have great development prospects, such as trifluoroethanol, trifluoroacetaldehyde, Trifluoroacetic acid, hexafluorobutanol, hexafluoroacetone, etc. are all basic fluorine-containing organic intermediates with high added value and good development prospects. Many aliphatic fluorine-containing intermediates and their downstream products have become new favorites in the market.
2,2-Difluoroethanol is mainly used in the synthesis of penoxsulam in pesticides. Penoxsulam is a broad-spectrum herbicide developed by Dow Agricultural Company of the United States, mainly used for rice weed control. It can effectively control barnyardgrass, sagebrush and annual sedge weeds, and is effective for many broad-leaved weeds, such as swamp isopium, carp sausage, saffron, bamboo flower, duck tongue, etc. At the same time, it can also control bensulfuron-methyl-resistant weeds in paddy fields. The validity period is up to 30-60 d. One application can basically control the damage of weeds in the whole season, and it is currently the variety with the widest herbicidal spectrum among the herbicides used in paddy fields.
Penoxsulam belongs to the triazolopyrimidine sulfonamide class of herbicides and acts by inhibiting acetolactate synthase (ALS). It was officially registered in the US EPA on September 24, 2004, and was popularized and applied in the southern rice area of the United States in 2005. It was registered in China in 2008. The dosage form currently registered in my country is 2.5% oil suspension. Penoxsulam can be quickly adsorbed by the soil, but will not remain in the soil for a long time. It can be degraded by photolysis and microorganisms, and has low toxicity to aquatic organisms. It is a new type of pesticide with high efficiency and low toxicity.
Penoxsulam can also be used in combination with a series of herbicides, such as chlorfenapyr, chlorfenuron, chlorfenapyr, fenoxazole and fenoxanil. The difluoroethoxy group in penoxsulam can be built up at the end of the reaction, or it can be built up during the reaction. The difluoroethoxy is constructed in the reaction:
Construction of difluoroethoxy at the end of the reaction:
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