CAS No. : | 22717-55-1 | MDL No. : | MFCD03407436 |
Formula : | C8H7ClO3 | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | QXDWMJQRXWLSDP-UHFFFAOYSA-N |
M.W : | 186.59 | Pubchem ID : | 327085 |
Synonyms : |
Signal Word: | Warning | Class: | |
Precautionary Statements: | P280-P305+P351+P338 | UN#: | |
Hazard Statements: | H302 | 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 |
---|---|---|
67% | With triethylamine; In dichloromethane; at -25 - 20℃;Inert atmosphere; | Compound 4 was dissolved in DCM (100 mL), and the solution cooled to -25 C and stirred under N2 atmosphere. After 5 minutes, TEA (2 eq) was added, followed by dropwise addition of trifluoromethanesulfonic (triflic) anhydride (Tf2O, 1.5 eq). The mixture was stirred at -25 C for 30 minutes, then warmed to room temperature, and diluted with Et2O (100 mL) and washed with 1 M aq. HCl (3 × 50 mL) and saturated aq. NaCl (1 × 50 mL). The organic layer was collected, dried over anhydrous Na2SO4 and evaporated to dryness under reduced pressure, affording 5 as a colourless oil (67% yield). |
With triethylamine; In dichloromethane; at -78 - 20℃; | To a round bottom flask was dissolved <strong>[22717-55-1]methyl-4-chloro-2-hydroxybenzoate</strong> (100g, 537mmol) in methylene chloride 1000mL put Triethylamine (113mL, 805mmol). It was added dropwise trifluoromethanesulfonic anhydride (99mL, 590mmol) at -78 C and then raise the temperature gradually to room temperature. After the reaction is extracted with water, filtered, the organic layer over MgSO4, remove water. Remove the organic solvent and then to remove the dark color after separation silicagel column dissolved in ether and the solvent and vacuum drying. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
100% | With caesium carbonate; In N,N-dimethyl-formamide; at 20℃; for 1.5h; | Cs2CO3 (0.5 eq) was added to a solution of 4-chloro-2-hydroxybenzoic acid (4-chlorosalycilic acid, 3) in DMF (200 mL), followed by addition, after 5 minutes, of iodomethane (5 equiv). The solution was stirred for 1.5 h, then diluted with diethyl ether/ethyl acetate (Et2O/EtOAc, 2:1 v/v) (100 mL), and washed with saturated aq. NaHCO3 (3 × 50 mL), then with saturated aq. NaCl (1 × 50 mL). The organic layer was collected, dried over anhydrous Na2SO4 and evaporated to dryness under reduced pressure, affording 4 as a colourless oil (quantitative). |
92% | With caesium carbonate; In N,N-dimethyl-formamide; at 20℃; | Step-I: Methyl 4-chloro-2-hydroxy-benzoate (VII-l-I): To a solution of 4-chlorosalicylic acid (75 g, 435.6 mmol) in anhydrous DMF (871 mL) was added Cs2C03 (70.7 g, 217.8 mmol) and Mel (27.5 mL, 439.9 mmol) sequentially. The reaction mixture was stirred at room temperature overnight. Ice cold water (3 L) was added to the reaction mixture and the precipitated solid was filtered and dried to provide VII- 1 -I (75 g, 92% yield). |
92% | With caesium carbonate; In N,N-dimethyl-formamide; at 20℃; | Step-I: Methyl 4-chloro-2-hydroxy-benzoate (VII-1-I) To a solution of 4-chlorosalicylic acid (75 g, 435.6 mmol) in anhydrous DMF (871 mL) was added Cs2CO3 (70.7 g, 217.8 mmol) and MeI (27.5 mL, 439.9 mmol) sequentially. The reaction mixture was stirred at room temperature overnight. Ice cold water (3 L) was added to the reaction mixture and the precipitated solid was filtered and dried to provide VII-1-I (75 g, 92% yield). |
92% | With caesium carbonate; In N,N-dimethyl-formamide; at 20℃; | Step-I: Methyl 4-chloro-2-hydroxy-benzoate (VII-1-I): To a solution of 4-chlorosalicylic acid (75 g, 435.6 mmol) in anhydrous DMF (871 mL) was added Cs2CO3 (70.7 g, 217.8 mmol) and MeI (27.5 mL, 439.9 mmol) sequentially. The reaction mixture was stirred at room temperature overnight. Ice cold water (3 L) was added to the reaction mixture and the precipitated solid was filtered and dried to provide VII-1-I (75 g, 92% yield). |
64.93% | With caesium carbonate; In N,N-dimethyl-formamide; at 20℃; | To a stirred solution of 4-chloro-2-hydroxybenzoic acid (5.0 g, 28.968 mmol, 1.0 eq)in DMF (60 mL) was added Cs2C03 (4.719 g, 14.484 mmol, 0.5 eq) and methyl iodide (4.52g, 31.864 mmol, 1.1 eq). The reaction mixture was stirred at room temperature for overnight.After completion of the reaction (monitored by TLC), the reaction mixture was diluted withwater (600 mL) and extracted with ethyl acetate (2xl00 mL). The combined organic extracts25 were washed with water (2x200 mL), dried over Na2S04, filtered and evaporated underreduced pressure to obtain the title compound (3.5 g, yield: 64.93%) as a liquid. 1H NMR(300 MHz, CDCh): 8 ppm 10.86 (s, IH), 7.77 (d, J = 8.7 Hz, IH), 7.01 (d, J = 2.1 Hz, IH),6.87 (dd, J = 8.7, 2.1 Hz, IH), 3.96 (s, 3H). |
With potassium carbonate; In N,N-dimethyl-formamide; at 20℃; for 4.5h; | Into the 4-chloro-2-hydroxybenzoic acid (200g, 1159mmol) and potassium carbonate (80g, 579mmol) and DMF 1000mL round bottom flask and stirred. If the mixture is melted and added dropwise methyl iodide (172g, 1217mmol) at room temperature for 4.5 hours after the end the reaction at room temperature. Ether extraction with water and then removing the water and the organic layer over MgSO4 and silica gel filter. The filtered organic layer is evaporated and dried under vacuum. |
[ 4068-78-4 ]
Methyl 5-chloro-2-hydroxybenzoate
Similarity: 0.98
[ 57479-70-6 ]
4-Chloro-2-methoxybenzoic acid
Similarity: 0.95
[ 3438-16-2 ]
5-Chloro-2-methoxybenzoic acid
Similarity: 0.93
[ 201150-65-4 ]
4,5-Dichloro-2-methoxybenzoic acid
Similarity: 0.92
[ 52159-67-8 ]
Methyl 3-chloro-2-hydroxybenzoate
Similarity: 0.92
[ 4068-78-4 ]
Methyl 5-chloro-2-hydroxybenzoate
Similarity: 0.98
[ 57479-70-6 ]
4-Chloro-2-methoxybenzoic acid
Similarity: 0.95
[ 3438-16-2 ]
5-Chloro-2-methoxybenzoic acid
Similarity: 0.93
[ 201150-65-4 ]
4,5-Dichloro-2-methoxybenzoic acid
Similarity: 0.92
[ 52159-67-8 ]
Methyl 3-chloro-2-hydroxybenzoate
Similarity: 0.92
[ 4068-78-4 ]
Methyl 5-chloro-2-hydroxybenzoate
Similarity: 0.98
[ 52159-67-8 ]
Methyl 3-chloro-2-hydroxybenzoate
Similarity: 0.92
[ 112270-06-1 ]
Ethyl 2-chloro-6-hydroxybenzoate
Similarity: 0.90
[ 3964-57-6 ]
Methyl 3-chloro-4-hydroxybenzoate
Similarity: 0.88
[ 166272-81-7 ]
Methyl 4-chloro-3-hydroxybenzoate
Similarity: 0.88