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 ]} | Inquiry |
{[ getRatePrice(item.pr_usd, 1,1,item.pr_is_large_size_no_price) ]} {[ getRatePrice(item.pr_usd,item.pr_rate,1,item.pr_is_large_size_no_price) ]} |
{[ getRatePrice(item.pr_usd, 1,1,item.pr_is_large_size_no_price) ]} | Inquiry {[ getRatePrice(item.pr_usd,item.pr_rate,item.mem_rate,item.pr_is_large_size_no_price) ]} {[ getRatePrice(item.pr_usd,1,item.mem_rate,item.pr_is_large_size_no_price) ]} | {[ item.pr_usastock ]} | in stock Inquiry - | {[ item.pr_chinastock ]} | {[ item.pr_remark ]} in stock Inquiry - | Login | Inquiry |
Please Login or Create an Account to: See VIP prices and availability
CAS No. : | 16874-33-2 | MDL No. : | MFCD00022473 |
Formula : | C5H8O3 | Boiling Point : | - |
Linear Structure Formula : | C4H7O(COOH) | InChI Key : | UJJLJRQIPMGXEZ-UHFFFAOYSA-N |
M.W : | 116.12 | Pubchem ID : | 86079 |
Synonyms : |
|
Chemical Name : | Tetrahydrofuran-2-carboxylic acid |
Signal Word: | Danger | Class: | 8 |
Precautionary Statements: | P501-P270-P264-P280-P303+P361+P353-P301+P330+P331-P363-P301+P312+P330-P304+P340+P310-P305+P351+P338+P310-P405 | UN#: | 3265 |
Hazard Statements: | H302-H314 | 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 |
---|---|---|
91% | With sulfuric acid; for 16h;Heating / reflux; | To a solution of TETRAHYDROFURAN-2-CARBOXYLIC acid (20 g, 172. 2356 MMOL) in anhydrous ethanol (100 mL) was added concentrated sulfuric acid (0. 46 mL). The resulting mixture was stirred at reflux for 16 hours and then allowed to cool to ambient temperature. To this was added water (100 mL) and extracted with diethyl ether (3x100 mL). The combined organic extracts were washed with saturated aqueous sodium bicarbonate (2X50 mL), saturated aqueous sodium chloride (100 ML), dried (anhydrous magnesium sulfate), filtered and concentrated in vacuo to afford the pure product as a colorless liquid (22. 5964 g, 91 %). LRMS (m/z) : 145 (M+H) +. 'H NMR (CDCI3, 300 MHz) 4. 38 (1H, dd, J= 4. 9, 8. 1 HZ), 4. 14 (2H, q, J= 7. 2 Hz), 3. 99-3. 92 (1 H, m), 3. 88-3. 81 (1 H, M), 2. 24-2. 12 (1 H, M), 2. 00-1. 79 (3H, m), 1. 22 (3H, t, J=7. 2Hz). |
With sulfuric acid; at 80℃; for 6h; | Step 1: Synthesis of ethyl tetrahydrofuran-2-carboxylate:To a stirred solution of tetrahydrofuran-2-carboxylic acid (about 10 g) in ethanol (150 ml), sulfuric acid (about 10 ml) was added and refluxed for 6 hours at 80 C. Completion of the reaction was monitored by TLC, reaction mixture was evaporated under reduced pressure, the residue was taken in water, neutralized with saturated NaHC03 and extracted with DCM, the organic layer was dried over a2S04 and concentrated under reduced pressure. The residue was purified by silica gel column chromatography using 5% ethyl acetate in hexane as eluent to furnish the title compound (12 g) as a light yellow liquid. NMR (300 MHz, CDC13): 1.22- 1.27 (m, 3H); 1.57- 1.87 (m, 8H); 2.65-2.76 (m, 1H); 4.08-4.15 (m, 2H); ES Mass: [M+l ] 143 (100%). | |
With thionyl chloride; at 0 - 20℃; for 2h; | Example 228 - Preparation of Intermediate 55 The synthesis of Intermediate 55 followed the procedure of General Procedure 7 following: Intermediate 55 To a cooled solution (0C) of tetrahydrofuran-2-carboxylic acid (5.8 g, 43 mmol) in Ethanol (40 mL) was added thionyl chloride (9.6 mL, 129 mmol). After stirring at this temperature for 2 hours, the mixture was concentrated under reduced pressure. The mixture was diluted with water (20 mL) and extracted into Diethyl ether (3 x 100 mL). The combined organic layers were dried over sodium sulfate, filtered and concentrated under reduced pressure to give ethyl tetrahydrofuran-2-carboxylate (Intermediate 55, 6 g, yield: 96%) as an oily residue that was used without further purification into the next step. m/z 145.03 [M+H]+; TLC System: 10% Methanol- dichloromethane; Rf-0.6. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
91% | With sulfuric acid; In ethanol; water; | Preparation c-90 Ethyl tetrahydrofuran-2-carboxylate To a solution of tetrahydrofuran-2-carboxylic acid (20 g, 172.2356 mmol) in anhydrous ethanol (100 mL) was added concentrated sulfuric acid (0.46 mL). The resulting mixture was stirred at reflux for 16 hours and then allowed to cool to ambient temperature. To this was added water (100 mL) and extracted with diethyl ether (3*100 mL). The combined organic extracts were washed with saturated aqueous sodium bicarbonate (2*50 mL), saturated aqueous sodium chloride (100 mL), dried (anhydrous magnesium sulfate), filtered and concentrated in vacuo to afford the pure product as a colorless liquid (22.5964 g, 91%). LRMS (m/z): 145 (M+H)+. 1H NMR (CDCl3, 300 MHz) delta 4.38 (1H, dd, J=4.9, 8.1 Hz), 4.14 (2H, q, J=7.2 Hz), 3.99-3.92 (1H, m), 3.88-3.81 (1H, m), 2.24-2.12 (1H, m), 2.00-1.79 (3H, m), 1.22 (3H, t, J=7.2 Hz). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Compounds 41-70 were part of a parallel set prepared in library plate format according to General Procedure L, outlined below. ; L. General Procedure for Plate Preparation-Amide Formation XXI: Resin bound deprotected biarylphenol XVII (prepared from intermediate XII, boronates XIVd and XIVe, following general procedures D-F) was distributed into a 96 well plate, 10 mg of resin (0.013 mmol) per well. To the resin 400 mul of dichloromethane was added, followed by 100 mul of DIEA, followed by 0.13 mmol (10 equiv) of heterocyclic carboxylic acid XXa-XXn was added followed by 61 mg (0.13 mmol, 10 equiv) of PyBrop. The plate was shaken at room temperature for 24 hours, then drained and washed with dichloromethane, methanol/dichloromethane, dimethylformamide, methanol/dichloromethane and dichloromethane. The compounds were cleaved with TFA/dichloromethane (600 mul, 1:1) into a 96 deep well plate and submitted for testing without further purification. (Mass spec results obtained are shown in Table 4). Carboxylic Acids Het-COOH XX: |
[ 87392-07-2 ]
(S)-Tetrahydrofuran-2-carboxylic acid
Similarity: 1.00
[ 51673-83-7 ]
Tetrahydro-2H-pyran-2-carboxylic acid
Similarity: 0.94
[ 4344-84-7 ]
5-Oxotetrahydrofuran-2-carboxylic acid
Similarity: 0.91
[ 21461-84-7 ]
(S)-5-Oxo-2-tetrahydrofurancarboxylic Acid
Similarity: 0.91
[ 87392-07-2 ]
(S)-Tetrahydrofuran-2-carboxylic acid
Similarity: 1.00
[ 4344-84-7 ]
5-Oxotetrahydrofuran-2-carboxylic acid
Similarity: 0.91
[ 21461-84-7 ]
(S)-5-Oxo-2-tetrahydrofurancarboxylic Acid
Similarity: 0.91
[ 16874-34-3 ]
Ethyl tetrahydrofuran-2-carboxylate
Similarity: 0.91