1,2,4-Trichlorobenzene synthesis
- Product Name:1,2,4-Trichlorobenzene
- CAS Number:120-82-1
- Molecular formula:C6H3Cl3
- Molecular Weight:181.45
Yield:120-82-1 1312.3 g ，95-50-1 264.9 g
Reaction Conditions:
Stage #1: para-dichlorobenzene at 100 - 200;Large scale;
Stage #2: with iron(III) chloride;chlorine;sulfur at 60 - 65; for 6 h;Large scale;
Steps:
18.IIIb
In the reactor weighed 1973 · 8 g (13.43 mol) of p-dichlorobenzene was added 98 · 7 g of a Lewis acid catalyst, stirring warming up to 100-200 ° C, 2-4 h after incubation mixture was distilled off, to give a mixture of 1963.9 g, the conversion rate of 0.05% .In the reactor weighed mixture obtained in step (13.36 mol) on 1963 · 9 g, was added 9 · 82 g of anhydrous ferric chloride and 4.91 g of sulfur powder, stirring warming up to 60-65 ° C after to 0.8 L / min flow rate of chlorine gas, 6 h the reaction is complete. 98.2% purity after distillation 1,2,4-trichlorobenzene 1312.3 g, p-dichlorobenzene 617.2 g, o-dichlorobenzene 264.9g, 1,2,3-trichlorobenzene 10.6 g, and conversion rate 98.4%.
References:
CN105801334,2016,A Location in patent:Paragraph 0068; 0069
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