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Chemical Structure| 22821-69-8 Chemical Structure| 22821-69-8

Structure of 22821-69-8

Chemical Structure| 22821-69-8

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Product Details of [ 22821-69-8 ]

CAS No. :22821-69-8
Formula : C9H10O4S
M.W : 214.24
SMILES Code : O=C(OC)C1=CC=CC(S(=O)(C)=O)=C1
MDL No. :MFCD11223481

Safety of [ 22821-69-8 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302
Precautionary Statements:P280-P305+P351+P338

Application In Synthesis of [ 22821-69-8 ]

* 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.

  • Downstream synthetic route of [ 22821-69-8 ]

[ 22821-69-8 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 22821-69-8 ]
  • [ 220798-39-0 ]
YieldReaction ConditionsOperation in experiment
93% In tetrahydrofuran; To a solution of methyl 3-methylsulfonylbenzoate (4.4 g, 20.3 mmol) in anhydrous THF (100 mL) was added lithium aluminum hydride (7 mL, 1.0 M solution in THF) via syringe at 0 C. After stirring for 2 hours at room temperature, the mixture was diluted with water, and extracted with diethyl ether. The combined organic extracts were dried (MgSO4), and concentrated to give 3-methylsulfonyl benzyl alcohol (3.5 g, 93%). 1H NMR (CDCl3) delta: 3.02 (s, 3H), 4.68 (s, 2H), 7.47 (t, 1H), 7.57 (d, 1H), 7.75 (d, 1H), 7.89 (s, 1H).
92% With lithium aluminium tetrahydride; In tetrahydrofuran; at 0 - 20℃; for 1h; e) Compound 8.4 can also be prepared according to Scheme 7B and the procedure below. [0282] SCHEME 7B [0283] A mixture of 8. 5 (1.0 mmoL), methyl iodide (1.2 mmoL) and potassium carbonate (2 mmoL) in 20 mL of acetone was heated at 50C for 3 hours. The solvent of the reaction mixture was removed under reduced pressure. The residue was partitioned between EtOAc and water. The aqueous solution was extracted with EtOAc, and combined organic solution was washed with brine, dried over Na2S04, filtered, concentrated. The crude product as a white solid (yield 98%) was used for next step without purification. To a solution of the compound (1 mmoL) made above in 4 mL of THF at 0 C was added LiAlH4 (1. 1 mmoL) slowly. The reaction mixture was allowed to warm to room temperature and stirred for 1 hour. The reaction was added consecutively with water, 15% aqueous NaOH and water with strong stirring. The filtration and evaporation of filtrate provided the crude product 8. 6 (yield 92%). No purification was needed. 1H NMR (400 MHz, CDC13) 6 3.05 (s, 3 H), 4.75 (s, 2 H), 7.53 (t, J=7. 58 Hz, 1 H), 7.62 (d, J=7. 34 Hz, 1 H), 7. 81 (d, J=7. 83 Hz, 1 H), 7.93 (s, 1 H).
82% With sodium tetrahydroborate; calcium chloride; In tetrahydrofuran; ethanol; at 20℃; for 1.5h; To a stirring solution of methyl 3-(methylsulfonyl)benzoate (950 mg, 4.43 mmol) in ethanol (20 mL) and THF ( lOmL) at - 10 C was added calcium chloride (492 mg, 4.43 mmol), followed by sodium borohydride (336 mg, 8.87 mmol). The resulting mixture was then stirred at rt for 30 mins. Tic after this time showed very low conversion. A further amount of NaBH4 (336 mg, 8.87 mmol) was added and the mixture was stirred at rt for further 1 hour. The reaction mixture was poured into sat. aq. NaHC03 (30 mL). The product was extracted with ethyl acetate (50 mL x 5) and the combined organics was dried over Na2S04 and concentrated in vacuo to afford (3-(methylsulfonyl)phenyl)methanol (800 mg, 82%) as a light yellow oil. NMR (300 MHz, CDCI3) delta ppm: 7.98 (s, 1H), 7.88 (dt, ,/ = 7.6, 1.6 Hz, 1H), 7.68 (d, J = 8. 1 Hz, 1 H), 7.59 (dd, ./ = 7.7 Hz, l H), 4.83 (s, 2H), 3.08 (s, 3H).
64% With lithium aluminium tetrahydride; In tetrahydrofuran; at 0 - 20℃; for 1.08333h;Inert atmosphere; To a solution of 122A (0.32 g, 1.5 mmol) in THF (7.5 mL) at 0 C under argon, was added LAH (2.25 mL, 2.25 mmol) portion-wise over a period of 5 mm. The reaction was stirred at rt for 1 h, and then was sequentially quenched slowly with water (0.1 mL), 15% NaOH (0.1 mL) and water (0.3 mL). The resulting mixture was stirred atrt for 1 h. The solids were removed by filtration through CELITE, and the filtrate was concentrated. The crude product was purified by silica gel chromatography to provide 122B (0.18 g, 0.96 mmol, 64%) as a colorless oil. MS(ESI) m/z 187.1 (M+H)t

 

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