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Chemical Structure| 879001-62-4 Chemical Structure| 879001-62-4

Structure of 879001-62-4

Chemical Structure| 879001-62-4

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Product Details of [ 879001-62-4 ]

CAS No. :879001-62-4
Formula : C9H18FNO2
M.W : 191.24
SMILES Code : O=C(OC(C)(C)C)NCC(C)(F)C
MDL No. :MFCD24470229

Safety of [ 879001-62-4 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319-H335
Precautionary Statements:P261-P264-P270-P271-P280-P301+P312-P302+P352-P304+P340-P305+P351+P338-P330-P332+P313-P337+P313-P362-P403+P233-P405-P501

Application In Synthesis of [ 879001-62-4 ]

* 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 [ 879001-62-4 ]

[ 879001-62-4 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 183059-24-7 ]
  • [ 879001-62-4 ]
YieldReaction ConditionsOperation in experiment
A solution of <strong>[183059-24-7]tert-butyl 2-hydroxy-2-methylpropylcarbamate</strong> (19.2 g, 101 mmol) in dichloromethane (500 mL) was stirred at -78 0C under a nitrogen atmosphere, and (diethylamino)sulfur trifluoride (DAST) (18.0 g, 112 mmol) was added dropwise. The solution was allowed to warm to room temperature and stirred overnight. Saturated aqueous sodium bicarbonate (150 mL) was added. The organic layer was then separated and washed sequentially with saturated aqueous sodium bicarbonate (150 mL), water (150 mL), and brine (150 mL); dried over magnesium sulfate; filtered; and concentrated under reduced pressure. The resulting oil was purified by automated flash chromatography (FLASH 651 cartridge, eluting with 10% ethyl acetate in hexane) to provide 13.7 g of tert- butyl 2-fluoro-2-methylpropylcarbamate as a light yellow oil that crystallized overnight.
With diethylamino-sulfur trifluoride; In dichloromethane; at -78 - 20℃; A solution of <strong>[183059-24-7]tert-butyl 2-hydroxy-2-methylpropylcarbamate</strong> (19.2 g, 101 mmol) indichloromethane (500 mL) was stirred at -78 0C under a nitrogen atmosphere, and(diethylamino)sulfur trifluoride (DAST) (18.0 g, 112 mmol) was added dropwise. Thesolution was allowed to warm to room temperature and stirred overnight. Saturatedaqueous sodium bicarbonate (150 mL) was added. The organic layer was then separated and washed sequentially with saturated aqueous sodium bicarbonate (150 mL), water (150 rnL), and brine (150 mL); dried over magnesium sulfate; filtered; and concentrated under reduced pressure. The resulting oil was purified by automated flash chromatography (FLASH 651 cartridge, eluting with 10% ethyl acetate in hexane) to provide 13.7 g of tert- 5 butyl 2-fluoro-2-methylpropylcarbamate as a light yellow oil that crystallized overnight
With diethylamino-sulfur trifluoride; In dichloromethane; at -78 - 20℃;Inert atmosphere; To a mixture of intermediate 16 (3.0 g, 15.9 mmol, crude) in anhydrous DCM (50 mL) was added DAST (2.3 mL, 17.4 mmol) at -78 C under a nitrogen atmosphere. The mixture was stirred at -78 C for 1 h, and allowed to warm to rt overnight. The mixture was then cooled to 0 C, and quenched by addition of saturated aqueous layer NaHCO3(30 mL) with stirring at 0 C slowly. The mixture was separated, and the aqueous layer was extracted with DCM (2x 20 mL). The combined organic layers were washed with brine (2 x 30 mL), dried, filtered and concentrated under vacuum to give the crude intermediate 17 (2.5 g, 76% crude), which was used directly in next step without purification. 1H NMR: (CDCI3): delta 4.82 (br, 1H), 3.30-3.35 (d, = 6.0 Hz, 1H), 3.24-3.26 (d, = 6.0 Hz, 1H), 1.44 (s, 9H), 1.37 (s, 3H), 1.35 (s, 3H).19F NMR: (CDC13400 MHz): delta -144.93.
With diethylamino-sulfur trifluoride; In dichloromethane; at -78 - 20℃;Inert atmosphere; To a mixture of intermediate 22 (3.0 g, 15.9 mmol) in anhydrous DCM (50 mL) was added DAST (2.3 mL, 17.4 mmol) at -78 C. under a N2 atmosphere. The mixture was stirred at -78 C. for 1 h, and then allowed to warm to rt overnight. The mixture was cooled to 0 C., and quenched by slow addition of sat. aqueous layer NaHCO3 (30 mL) with stirring at 0 C. The mixture was separated, and the aqueous layer was extracted with DCM (2×20 mL). The combined organic layer was washed with brine (2×30 mL), dried, filtered and concentrated under vacuum to yield the crude intermediate 23 (2.5 g), which was used directly in the next step without purification.1H NMR: (CDCl3): delta 4.82 (br, 1H), 3.30-3.35 (d, J=6.0 Hz, 1H), 3.24-3.26 (d, J=6.0 Hz, 1H), 1.44 (s, 9H), 1.37 (s, 3H), 1.35 (s, 3H).19F NMR: (CDCl3): delta-144.93.

 

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