ChemicalBook CAS DataBase List 1,3-Bis(chloromethyl)benzene

1,3-Bis(chloromethyl)benzene synthesis

8synthesis methods

Product Name:1,3-Bis(chloromethyl)benzene
CAS Number:626-16-4
Molecular formula:C8H8Cl2
Molecular Weight:175.06

108-38-3
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$10.60/50gm:

626-16-4
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$16.00/25g

Yield:626-16-4 99.18%

Reaction Conditions:

with chlorine;1-butyl-3-methylimidazolium chloride at 58; for 3 h;Irradiation;Ionic liquid;Reagent/catalyst;Temperature;

Steps:

3.1 Example 3
Preparation of m-dichlorobenzyl as follows:(1) Reaction:100 mL (86.8 g) of m-xylene, 300 mL of tetrafluorohexane and 0.435 g of 1-butyl-3-methylimidazolium chloride were addedTo the reaction tank, and then in the LED light source irradiation, the reactor into the 232.44g chlorine gas at 58 reaction 3h,To obtain the m-dichlorobenzyl reaction liquid with the content of m-dichlorobenzene of 90wt%;(2) Separation:The m-dichlorobenzene reaction solution was added to a separation tank and subjected to a stratification treatment at 35 ° C, and the upper layer solution was introduced into the reaction tank to be relayedContinued reaction, the lower solution of m-dichlorobenzene crude;(3) Refining:The crude product of m-dichlorobenzene was added to the distillation column, vacuum distillation was carried out at 8 mmHg, the fraction of 145-149 ° C was collected,There was obtained 130.02 g of m-dichlorobenzyl in an amount of 99.18% and a melting point of 33.5 to 34.7C.

References:

Shandong Kaisheng New Materials Co.,Ltd.;Xue, Juqiang;Zhang, Shanmin;Zhang, Taiming;Wang, Ronghai;Sun, Fengchun;Zhang, Qingxin CN105384597, 2016, A Location in patent:Paragraph 0044; 0045; 0046; 0047; 0048; 0049; 00450; 00451

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