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Chemical Structure| 1228631-45-5 Chemical Structure| 1228631-45-5

Structure of 1228631-45-5

Chemical Structure| 1228631-45-5

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Product Details of [ 1228631-45-5 ]

CAS No. :1228631-45-5
Formula : C13H22FNO4
M.W : 275.32
SMILES Code : O=C(N1CC(C(OCC)=O)(F)CCC1)OC(C)(C)C
MDL No. :MFCD12911429
InChI Key :QODPJSPWRVJNDL-UHFFFAOYSA-N
Pubchem ID :49761218

Safety of [ 1228631-45-5 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319-H335
Precautionary Statements:P261-P305+P351+P338

Application In Synthesis of [ 1228631-45-5 ]

* 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.

  • Upstream synthesis route of [ 1228631-45-5 ]

[ 1228631-45-5 ] Synthesis Path-Upstream   1~3

  • 1
  • [ 148672-74-6 ]
  • [ 1228631-45-5 ]
YieldReaction ConditionsOperation in experiment
65.4%
Stage #1: With lithium hexamethyldisilazane In tetrahydrofuran at -78 - -20℃; for 1 h; Inert atmosphere
Stage #2: With N-fluorobis(benzenesulfon)imide In tetrahydrofuran at -78 - 20℃; for 2 h;
Intermediate 28: tert- -ethyl 3-fluoropiperidine-l,3-dicarboxylate (0480) 1-fe/f-Butyl 3-ethyl piperidine-l,3-dicarboxylate (5 g, 19.43 mmol, commercially available form, for example, Sigma Aldrich) in THF (20 mL) was added dropwise to a solution of lithium _s(trimethylsilyl)amide (38.9 mL, 38.9 mmol) in THF (20 mL) at -78 °C under nitrogen, then the solution was allowed to warm to -20 °C over lh, then recooled to -78 °C. A solution of N-fluoro-N- (phenylsulfonyl)benzenesulfonamide (12.25 g, 38.9 mmol) in THF (30 mL) was added dropwise, then the mixture was stirred for 2 h, allowing it to warm gradually to rt. The reaction mixture was quenched with saturated ammonium chloride solution (100 mL) and extracted with EtOAc (100 mL). The organic layer was washed with IM NaOH solution (100 mL) and brine, then dried and evaporated to give a yellow oil. The crude product was dissolved in DCM and loaded onto a 50 g silica column, then eluted with 0-50percent EtOAc/cyclohexane to give 1-fe/f-butyl 3-ethyl 3-fluoropiperidine-l,3-dicarboxylate (3.5 g, 12.71 mmol, 65.4 percent yield) as a colourless oil. (0481) *H NMR (400 MHz, CDC -o) d ppm 4.27 (q, J=7.3 Hz, 2 H) 3.17 - 3.44 (m, 1 H) 2.70 - 2.92 (m, 1 H) 1.98 - 2.21 (m, 2 H) 1.78 - 1.96 (m, 2 H) 1.60 - 1.72 (m, 2 H) 1.45 - 1.51 (m, 9 H) 1.33 (s, 3 H)
65%
Stage #1: With lithium hexamethyldisilazane In tetrahydrofuran at -78 - -20℃; for 1 h; Inert atmosphere
Stage #2: With N-fluorobis(benzenesulfon)imide In tetrahydrofuran for 2 h;
1-tertButyl 3-ethyl piperidine-1,3-dicarboxylate (5.0 g, 19 minol, cominercially available form, for example, Sigma Aldrich) in THF (20 mL) was added dropwise to a solution of lithium bLs(trimethylsilyl)aminde (iN in THF, 38.9 mL, 38.9 minol) in THF (20 mL) at -78°C under nitrogen, then the solution was allowed to warm to -20°C over 1 h, then recooled to -78°C. A solution of Nfluoro-N-(phenylsulfonyl)benzenesulfonaminde (12.2 g, 38.9 minol) in THF (30 mL) was addeddropwise, then the minxture was stirred for 2 h, allowing it to warm gradually to room temperature. The reaction minxture was quenched with a saturated aminonium chloride aqueous solution (100 mL) and extracted with EtOAc (100 mL). The organic layer was washed with iN NaOH aqueous solution (100 mL) and brine, then dried and evaporated to give a yellow oil. The crude product was dissolved in DCM and loaded onto a 50 g silica column, then eluted with 0-50percent EtOAc/cyclohexane to give 1-tert-butyl 3-ethyl 3-fluoropiperidine-1,3-dicarboxylate (3.5 g, 6Spercent) as a colourless oil.1H NMR (400 MHz, CDCI3) ppm 4.27 (q, J= 7.3 Hz, 2 H) 3.17 - 3.44 (m, 1 H) 2.70 - 2.92 (m, 1 H) 1.98 - 2.21 (m, 2 H) 1.78 - 1.96 (m, 2 H) 1.60 - 1.72 (m, 2 H) 1.45 - 1.51 (m, 9 H) 1.33 (5, 3 H)
References: [1] Patent: WO2017/174621, 2017, A1, . Location in patent: Page/Page column 49-50.
[2] Patent: WO2017/174620, 2017, A1, . Location in patent: Page/Page column 78.
[3] Patent: WO2010/102218, 2010, A1, . Location in patent: Page/Page column 131.
[4] Patent: WO2011/85406, 2011, A1, . Location in patent: Page/Page column 138.
[5] Patent: WO2012/33956, 2012, A1, . Location in patent: Page/Page column 160.
  • 2
  • [ 24424-99-5 ]
  • [ 1228631-45-5 ]
References: [1] Patent: WO2011/85406, 2011, A1, .
[2] Patent: WO2012/33956, 2012, A1, .
  • 3
  • [ 71962-74-8 ]
  • [ 1228631-45-5 ]
References: [1] Patent: WO2011/85406, 2011, A1, .
[2] Patent: WO2012/33956, 2012, A1, .
 

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