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Chemical Structure| 109904-37-2 Chemical Structure| 109904-37-2

Structure of 109904-37-2

Chemical Structure| 109904-37-2

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Product Details of [ 109904-37-2 ]

CAS No. :109904-37-2
Formula : C7H9NOS
M.W : 155.22
SMILES Code : O=C1C=C2CNCCC2S1
MDL No. :MFCD11977648

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Application In Synthesis of [ 109904-37-2 ]

* 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 [ 109904-37-2 ]

[ 109904-37-2 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 204205-33-4 ]
  • [ 109904-37-2 ]
  • [ 150322-38-6 ]
YieldReaction ConditionsOperation in experiment
With triethylamine; In tetrahydrofuran; at 0 - 5℃; for 3h;Product distribution / selectivity; Example-23: Preparation of 5-(alpha-cyclopropylcarbonyl-2-fluorobenzyI)-2-oxo- 2,4,5,6,7,7a-hexahydrothieno[3, 2-c] pyridine.; 2-fluoro-alpha-cyclopropyl carbonyl benzyl bromide (3.5 grams) was added to a mixture of 5,6,7,7a-tetrahydro-4H-thieno[3,2-c]-pyridin-2-one(5.0 grams) and triethylamine (2.0 grams) in tetrahydrofuran (80 ml) at 0-50C and stirred for 3 hours. The reaction mixture was quenched with water and then extracted it with methylene chloride. The methylene chloride washed with water and organic and aqueous layers were separated. The methylene chloride from the organic layers was distilled off completely and the obtained residue purified using cyclohexane and ethyl acetate to provide the title compound. Yield: 3.5 grams
With sodium carbonate; In acetonitrile; at 26℃; for 28h;Product distribution / selectivity; Example 3: Preparation of 5-(2-cyclopropyl-1-(2-fluorophenyl)-2- oxoethyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridin-2-yl acetate. 2-Bromo-1 - cyclopropyl-2-(2-fluorophenyl)ethanone (7.5 g) (obtained from example 2 and acetonitrile (25 mL) are charged into a round bottom flask at 26C. Sodium carbonate (6.06 g) is added to the reaction mass at 26C. 5,6,7,7a-tetrahydro- thieno[3,2-c]pyridin-2(4H)-one (5.0 g) is added to the reaction mass at 26C. The reaction mass is stirred for 28 hours at 26C. The reaction mass is filtered and washed with acetonitrile (10 mL). The filtrate is charged into a round bottom flask at 27C and cooled to 4C. N-methylmorpholine (5.25 g) and 4- dimethylaminopyridine (0.0349 g) are added to the filtrate at 4C. Acetic anhydride (3.981 g) is added by drops to the reaction mass at 4C. The reaction mass is stirred for 3 hours at 4C. Water (35 ml) is added by drops to the reaction mass at 4C in 15 minutes. The reaction mass is stirred at 4C for 1 hour 30 minutes. The solid is collected by filtration and washed with chilled acetonitrile and water mixture (5+5 ml). The wet solid material and acetonitrile (25 ml_) are charged into a round bottom flask at 28C and heated to 48C for 10 minutes to obtain clear solution. The solution is cooled to 5C and stirred at the same temperature for 1 hour 30 minutes. The solid is collected by filtration, washed with chilled acetonitrile (5 mL), and then dried under vacuum at 70C for 5 hours. Yield: 3.96 g; HPLC Purity: 99.57%; 3-fluoro impurity: 0.027%.
With sodium hydrogencarbonate; In acetonitrile; at 70℃; for 6h; The QR02000-IN-07 (10mmol, 1.0eq) wasdissolved in 20mL of acetonitrile was added QR02000-IN-10 (10mmol, 1.0eq) and NaHCO 3 (20mmol, 2.0eq), heatedto 70 C, the reaction 6h. Cooled to roomTemperature, inorganic salts were removed byfiltration, the solvent was distilled off under reduced pressure, water wasadded 100mL ethyl acetate and 30mL, there separated The organic layer, theorganic layer was washed with saturated brine twice, dried over anhydroussodium sulfate, the solvent was removed under reduced pressure, and purified bycolumn chromatography The product was QR02000-IN-11.
  • 2
  • [ 204205-33-4 ]
  • [ 109904-37-2 ]
  • [ 18162-48-6 ]
  • [ 952340-38-4 ]
YieldReaction ConditionsOperation in experiment
90% Example 4 The method for preparing 2-(tert-butyldimethylsilyloxy)-5-(alpha-cyclopropyl formyl-2-fluorobenzyl)-4,5,6,7-tetrahydro-thieno[3,2-c]pyridine (compound of Formula III) 5,6,7,7a-Tetrahydro-4H-thieno[3,2-c]pyridin-2-one (2.0 g) was added to dichloromethane (10 mL) and stirred for 10 minutes at 10 C. Triethylamine (1.22 g) was then added and the mixture was stirred for 15 minutes to form a reaction mixture. Tert-butyldimethylsilyl chloride (1.81 g) dissolved in dichloromethane was added to the mixture at 10 C. The mixture was stirred at 10 C. and the reaction was monitored by Thin Layer Chromatography (TLC) (methanol/ethyl acetate=3/7) until the reaction was completed. Triethylamine (2.12 g), sodium iodide (0.02 g) and 2-bromo-2-(2-fluorophenyl)-1-cyclopropyl-ethanone (1.5 molar eq.) were added slowly to the reaction mixture at 10 C. The reaction mixture was stirred at 25 C. and the reaction was monitored by Thin Layer Chromatography (TLC) (methanol/ethyl acetate=3/7). After the reaction was completed, the organic phase was then washed with phosphate buffer (pH 6-7), and concentrated under reduced pressure at 30 C. to obtain 2-(tert-butyldimethylsilyloxy)-5-(alpha-cyclopropylformyl-2-fluorobenzyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine as a crude product. The crude product (1 g) was recrystallized using acetone/water (1:1 v/v) (acetone volume=10 ml) at -5 C. for 3 hours for the crystallization method. Crystal precipitate was collected by filtration and dried under vacuum at 50 C. for 24 hours to obtain (tert-butyldimethylsilyloxy)-5-(alpha-cyclopropylformyl-2-fluorobenzyl)-4,5,6,7-tetrahydro-thieno[3,2-c]pyridine with the HPLC purity of 96%. The yield was 90%.
 

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