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CAS No. : | 6781-98-2 | MDL No. : | MFCD00000565 |
Formula : | C8H9Cl | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | VDXLAYAQGYCQEO-UHFFFAOYSA-N |
M.W : | 140.61 | Pubchem ID : | 32885 |
Synonyms : |
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Signal Word: | Warning | Class: | |
Precautionary Statements: | P305+P351+P338 | UN#: | |
Hazard Statements: | H227-H315-H319-H335 | Packing Group: | |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With oxygen; potassium bromide; at 70 - 75℃; under 750.075 - 8250.83 Torr;Autoclave; | 500mL stainless steel autoclave,Add 140g (1.0mol) of 2,6-dimethylchlorobenzene,Add 0.14g of cobalt acetylacetonate,Add 0.14g potassium bromide,After vacuum nitrogen replacement for 2 times,Adding the first oxygen to a pressure of 1.0 to 1.1 MPa,Warm the system to 70-75 C,Turn on the stirring reaction,When the pressure in the kettle is less than 0.1 MPa,Supplementing the second oxygen to a pressure of 1.0 to 1.1 MPa,Add a total of 3 parts of oxygen,A total of 80g (2.5mol) of oxygen was added.The reaction time is 5-6 hours.Sampling and testing products accounted for 50%,Raw materials account for 0%,The intermediate product 2-chloro-3-methylbenzaldehyde accounts for 10%.2,6-dicarboxychlorobenzene 25%,2-Chloro-3-carboxybenzaldehyde 10%.Cool down to room temperature,filter,Drain,The filter cake is dried,Get the target product,Weighing 104.6g,Purity 65.2%,The yield was 40%. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
95% | With oxygen; potassium bromide; at 70 - 75℃; under 750.075 - 3750.38 Torr;Autoclave; | 500mL stainless steel autoclave,Add 140g (1.0mol) of 2,6-dimethylchlorobenzene,Add 0.14g of cobalt acetylacetonate,Add 0.14g potassium bromide,After vacuum nitrogen replacement for 2 times,Adding the first oxygen to a pressure of 0.3 to 0.5 MPa,Warm the system to 70-75 C,Turn on the stirring reaction,When the pressure in the kettle is less than 0.1 MPa,Supplementing the second oxygen to a pressure of 0.3 to 0.5 MPa,Add a total of 4 parts of oxygen,A total of 64g (2.0mol) of oxygen was added.The reaction time is 5-6 hours.Sampling and testing products accounted for 20%,Raw materials account for 55%,The intermediate product 2-chloro-3-methylbenzaldehyde accounts for 20%.Cool down to room temperature,filter,Drain,The mother liquor is directly applied to the next batch (only 10% catalyst can be added).The filter cake is dried,Get the target product,Weighing 33.1g, purity 98.0%,The yield was 95% (calculated as the raw material consumed). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
93% | With potassium phosphate; C48H54Cl2N5Pd; In water; isopropyl alcohol; at 45℃; for 15h; | General procedure: A mixture of aryl chloride (0.125 mmol), aryl boronic acid (0.15 mmol) and K4PO3 (0.25 mmol), catalyst (0.000125 mmol) in H2O (0.1 mL), isopropanol (0.1 mL) was stirred in a test tube at 45 C. After the reaction was completed, cooled to room temperature and the mixture was extracted with CH2Cl2 and dried over Na2SO4. The solvent was removed under vacuum. The product was purified by flash chromatography on a silica gel column. The characterization of all coupling products see Supporting Information. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
97% | With palladium diacetate; 9-[2-(dicyclohexylphosphino)phenyl]-2-ethoxy-9H-carbazole; sodium t-butanolate; In hexane; dichloromethane; toluene; at 20 - 110℃; for 24h;Inert atmosphere; Schlenk technique; | General procedure: Pd(OAc)2 (0.0022 g, 0.01 mmol) and L4 (0.0193 g, 0.04 mmol) infreshly distilled DCM (10 mL) was initially prepared under N2 with continuous stirring at rt until all solids were dissolved. A dilution tube was equipped with a Teflon-coated magnetic stir bar (4 mm × 10 mm) and evacuated and flushed with N2 (3 cycles). Stock solution of Pd complex (1 mL) was added to the dilution tube by syringe. Additional freshly distilled DCM (9 mL) was added to the dilution tube for a 2nd stock solution. The corresponding volume of 2nd stock solution of palladium complex was then immediately added to the Schlenk tube by syringe according to the Pd loading indicated in Schemes 3-5 (0.02 mol% Pd per 1 mL 2nd stock solution). The solvent was then removed under high vacuum. NaOt-Bu (0.12 g, 1.25 mmol) was loaded into a Schlenk tube, and the system was further evacuated and flushed with N2 (3 cycles). Sterically hindered aryl chlorides (0.5 mmol), sterically hindered amines (0.75 mmol), toluene (0.5 mL), and hexane (0.5 mL) were added with stirring at rt for several minutes. The tube was then placed into a pre-heated oil bath (110 C) and stirred for 24 h. After the completion of reaction as judged by GC or TLC analysis, the reaction tube was allowed to cool to rt. The reaction was quenched with water (~2 mL) and diluted with EtOAc (~3 mL).The filtrate was concentrated under reduced pressure. The crude products were purified by flash column chromatography on silica gel (230-400 mesh) to afford the desired product. |
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