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156570-10-4

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156570-10-4 Usage

General Description

1-(1-chloromethylethenyl)-2,4-difluorobenzene is a chemical compound with the molecular formula C10H7ClF2. It is a substituted benzene compound with one chlorine atom attached to a carbon atom and two fluorine atoms attached to different carbon atoms of the benzene ring. The compound is used in organic synthesis and chemical research, and it may have applications in the production of pharmaceuticals, agrochemicals, and specialty chemicals. It is important to handle this compound with caution and follow safety protocols, as it may have hazardous properties. Additional research and testing may be needed to fully understand the potential uses and risks associated with this chemical.

Check Digit Verification of cas no

The CAS Registry Mumber 156570-10-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,5,7 and 0 respectively; the second part has 2 digits, 1 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 156570-10:
(8*1)+(7*5)+(6*6)+(5*5)+(4*7)+(3*0)+(2*1)+(1*0)=134
134 % 10 = 4
So 156570-10-4 is a valid CAS Registry Number.

156570-10-4Relevant articles and documents

Synthesis method of diethyl 2-[2-(2,4-difluorophenyl)allyl]-1,3-malonate

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Paragraph 0016; 0034; 0036, (2017/02/28)

The invention relates to a synthesis method of diethyl 2-[2-(2,4-difluorophenyl)allyl]-1,3-malonate. The synthesis method comprises the following steps: mixing 3-chloro-1,2-propanediol and 1,3-difluorobenzene, and adding a catalyst to react; adding the mixture into a hydrochloric acid solution at 5 to -5 DEG C, stirring uniformly, extracting 3-5 times by using dichloromethane as an extractant, and washing the extracting solution with a saturated NaHCO3 solution, water and a saturated saline solution; drying with anhydrous Na2SO4, filtering, evaporating the dichloromethane to obtain 1-chloro-2-(2,4-difluorophenyl)-3-propanol, mixing the 1-chloro-2-(2,4-difluorophenyl)-3-propanol and potassium hydrogen sulfate into chlorobenzene, and heating under reflux for 10-16 hours; and washing with water to a neutral state, drying with anhydrous Na2SO4, filtering, distilling to obtain 1-(1-chloromethylvinyl)-2,4-difluorobenzene, dissolving in DMSO (dimethyl sulfoxide), adding diethyl malonate and hydroxide to react, extracting, washing and carrying out reduced pressure distillation to obtain the target product. The synthesis route is disclosed in the specification.

Synthesis method of 2-[2-(2,4-diflurophenyl)-2-propylene-1-yl]-1,3-propylene glycol

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Paragraph 0038, (2017/04/03)

The invention relates to a synthesis method of 2-[2-(2,4-diflurophenyl)-2-propylene-1-yl]-1,3-propyl glycol. The synthesis method comprises the following steps: mixing 3-chloro-1,2-propyl glycol with 1,3-difluorphenyl, adding a catalyst, reacting for 6-10 hours at room temperature, heating to 50-70 DEG C, and reacting for 2-4 hours; adding obtained mixture into hydrochloric acid solution at the temperature ranging from -5 DEG C to 5 DEG C, uniformly stirring, extracting for 3-5 times by taking dichloromethane as an extracting agent, and washing extract liquor once with saturated NaHCO3 solution, water and saturated saline solution; drying with anhydrous Na2SO4 and filtering, and evaporating dichloromethane to obtain 1-chloro-2-(2,4-diflurophenyl)-3-propyl glycol; adding 1-chloro-2-(2,4-diflurophenyl)-3-propyl glycol and potassium hydrogen sulphate into chlorobenzene, heating and refluxing for 10-16 hours; washing to be neutral, drying with anhydrous Na2SO4, then filtering, dissolving a distillation product into DMSO, adding diethyl malonate and hydroxide, reacting, and then carrying out reaction on the obtained products with lithium chloride and sodium borohydride, so that the target product is obtained, wherein a synthesis route is described in the specification.

Synthesis method of 2-[2-(2,4-diflurophenyl)propenyl]-1,3-diethyl malonate

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Paragraph 0038, (2017/04/19)

The invention relates to a synthesis method of 2-[2-(2,4-diflurophenyl)propenyl]-1,3-diethyl malonate. The synthesis method of 2-[2-(2,4-diflurophenyl)propenyl]-1,3-diethyl malonate is characterized in that the synthesis method comprises the following steps: (1) mixing 2-chloromethyl epoxy propane with 1,3-difluorobenzene to perform reaction under an effect of catalyst to obtain 2-(2,4-diflurophenyl)-1-chloro-3-propanol; (2) mixing 2-(2,4-diflurophenyl)-1-chloro-3-propanol obtained in step (1) with potassium hydrogen sulfate and chlorobenzene to perform reaction to obtain 1-(1-chloromethylvinyl)-2,4-difluorobenzene; (3) enabling 1-(1-chloromethylvinyl)-2,4-difluorobenzene obtained in step (2) to react with diethyl malonate to obtain a target product 2-[2-(2,4-diflurophenyl)propenyl]-1,3-diethyl malonate; a specific synthesis route is as shown in the accompanying drawing.

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