There will be a HazMat fee per item when shipping a dangerous goods. The HazMat fee will be charged to your UPS/DHL/FedEx collect account or added to the invoice unless the package is shipped via Ground service. Ship by air in Excepted Quantity (each bottle), which is up to 1g/1mL for class 6.1 packing group I or II, and up to 25g/25ml for all other HazMat items.
Type | HazMat fee for 500 gram (Estimated) |
Excepted Quantity | USD 0.00 |
Limited Quantity | USD 15-60 |
Inaccessible (Haz class 6.1), Domestic | USD 80+ |
Inaccessible (Haz class 6.1), International | USD 150+ |
Accessible (Haz class 3, 4, 5 or 8), Domestic | USD 100+ |
Accessible (Haz class 3, 4, 5 or 8), International | USD 200+ |
Purity | Size | Price | VIP Price | USA Stock *0-1 Day | Global Stock *5-7 Days | Quantity | |||||
{[ item.p_purity ]} | {[ item.pr_size ]} |
{[ getRatePrice(item.pr_usd, 1,1) ]} {[ getRatePrice(item.pr_usd,item.pr_rate,item.mem_rate) ]} |
{[ getRatePrice(item.pr_usd, 1,1) ]} | Inquiry {[ getRatePrice(item.pr_usd,item.pr_rate,item.mem_rate) ]} {[ getRatePrice(item.pr_usd,1,item.mem_rate) ]} | {[ item.pr_usastock ]} | Inquiry - | {[ item.pr_chinastock ]} | Inquiry - |
* Storage: {[proInfo.prStorage]}
CAS No. : | 5230-78-4 | MDL No. : | MFCD00000313 |
Formula : | C7H4F4 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | - |
M.W : | 164.10 | Pubchem ID : | - |
Synonyms : |
|
Signal Word: | Danger | Class: | 3 |
Precautionary Statements: | P261-P280-P305+P351+P338 | UN#: | 1993 |
Hazard Statements: | H225-H302-H312-H319-H332-H335 | Packing Group: | Ⅲ |
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 N-Bromosuccinimide; dibenzoyl peroxide In tetrachloromethane | 4 EXAMPLE 4 EXAMPLE 4 This example illustrates the preparation of 2,3,5,6-tetrafluorobenzyl bromide. A mixture of 2,3,5,6-tetrafluorotoluene (1.7 g), N-bromosuccinimide (1.9 g), dry carbon tetrachloride (10 ml) and benzoyl peroxide (0.01 g) was heated at the reflux temperature for 20 hours, cooled to the ambient temperature (ca.25° C.) filtered and the filtrate diluted with diethyl ether. The ethereal solution was washed with water, dried over anhydrous magnesium sulphate and concentrated by evaporation of the solvents to yield 2,3,5,6-tetrafluorobenzyl bromide as a mobile colourless oil. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
55% | With diisopropylsulfide; palladium diacetate; silver carbonate In 1,4-dioxane at 140℃; Inert atmosphere; regioselective reaction; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: methyllithium; potassium perfluorophenyltrifluoroborate In 1,2-dimethoxyethane; diethyl ether for 1h; Inert atmosphere; Heating; Stage #2: With potassium fluoride In 1,2-dimethoxyethane; diethyl ether; water for 8h; Inert atmosphere; | 3.3. K[C6F5BF3] (128 mg, 0.46 mmol) in DME (5 mL) was reacted with 0.92 M MeLi inether (2 mL, 1.8 mmol) at 60-62 °C for 1 h. Suspension was cooled to 25 °C. Thesupernatant contained 4 (0.02 mmol), and several unknown compounds. After stirringof suspension with saturated aqueous solution of KF (10 mL) for 8 h the quantity of 4increased to 0.14 mmol and resonances of pentafluorobenzene (0.01 mmol) and2,3,4,5-tetrafluorotoluene (0.01 mmol) appeared besides unknown products (19FNMR). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
98.5% | Stage #1: 2,3,5,6-tetrafluorotoluene With isopropylmagnesium chloride In tetrahydrofuran at 20℃; for 12h; Stage #2: With 18-crown-6 ether In 1,4-dioxane; 1,2-dimethoxyethane at 20℃; for 0.5h; Stage #3: 2-naphthyl triflate With bis(1,5-cyclooctadiene)nickel (0); bis[2-(di(2-naphthyl)phosphino)phenyl]ether In tetrahydrofuran; 1,4-dioxane at 40℃; for 6h; | 16 2,3,5,6-tetrafluoro-1,1'-biphenyl 1,In the absence of anaerobic conditions,360 mg (2.4 mmol) of 1,2,4,5-tetrafluorobenzene was dissolved in 1 mL of tetrahydrofuran,Then, 1 mL of a 2 mol / L solution of isopropylmagnesium chloride in tetrahydrofuran was added,The reaction was stirred at room temperature for 12 hours,To the reaction solution was added 3 mL of 1,4-dioxane,0.6 mL of ethylene glycol dimethyl ether and 26.4 mg (0.10 mmol) of 18-crown ether-6,Stir for 30 minutes at room temperature.2, in the anhydrous anaerobic conditions,To 0.4 mL of tetrahydrofuran and 0.6 mL of 1,4-dioxane was added 20.6 g(0.08 mmol)Bis (1,5-cyclooctadiene) nickel,77 mg (0.1 mmol) of bis (2-bis (3,5-dimethyl-4-methoxyphenyl)phosphine)Phenyl ether,Stir for 30 minutes at room temperature.3, in the anhydrous anaerobic conditions,The reaction solution obtained in Step 1 and Step 2 was mixed,And 224 mg (1.0 mmol) of 2-methyl-5-iodothiophene was added,Stirring at room temperature for 6 hours,TLC detection reaction is complete,Add 0.5 mL of methanol for 10 min,After the reaction is quenched completely,The reaction solution was washed with 0.1 mol / L hydrochloric acid,And extracted with ethyl acetate,The ethyl acetate extract was dried over anhydrous sodium sulfate,Evaporated under reduced pressure,And then separated by silica gel column chromatography,To give the product 2-methyl-5- (2 ', 3', 5 ', 6'-tetrafluorophenyl) thiophene,Its yield was 91%.In step 1 of Example 1, 2.4 mmol of 1,2,4,5-tetrafluorobenzene was equimolar3-methyl-1,2,4,5-tetrafluorobenzene; in step 2,Bis (2-bis (3,5-dimethyl-4-methoxyphenyl) phosphine) phenylene ether was equimolarBis (2-bis (2-naphthyl) phosphine) phenyl ether;In step 3,2-methyl-5-iodothiophene was replaced with equimolar 2-naphthyl trifluoromethanesulfonate,The reaction temperature was raised to 40 ° C,The other steps were the same as in Example 1,To give 2- (4'-methyl-2 ', 3', 5 ', 6'-tetrafluorophenyl) naphthalene in a yield of 98.5% |
98% | With bis(1,5-cyclooctadiene)nickel (0); 18-crown-6 ether; 2-[bis((3,5-dimethyl-4-methoxyphenyl)phosphino)phenyl]ether; isopropylmagnesium chloride In tetrahydrofuran; 1,4-dioxane; 1,2-dimethoxyethane at 40℃; for 2h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 65% 2: 9% 3: 4% | With H2SiEt2; tetrabutylammonium triphenyldifluorosilicate In tetrahydrofuran; benzene-d6 at 60℃; for 40h; Inert atmosphere; Sealed tube; |