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Chemical Structure| 114676-53-8 Chemical Structure| 114676-53-8

Structure of 114676-53-8

Chemical Structure| 114676-53-8

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Product Details of [ 114676-53-8 ]

CAS No. :114676-53-8
Formula : C13H17NO3
M.W : 235.28
SMILES Code : O=C([C@@H]1N(CC2=CC=CC=C2)C[C@H](O)C1)OC
MDL No. :MFCD07186303

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Application In Synthesis of [ 114676-53-8 ]

* 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 [ 114676-53-8 ]

[ 114676-53-8 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 100-44-7 ]
  • [ 114676-59-4 ]
  • [ 114676-53-8 ]
  • 2
  • [ 100-39-0 ]
  • [ 114676-59-4 ]
  • [ 114676-53-8 ]
YieldReaction ConditionsOperation in experiment
81% With triethylamine; In dichloromethane; for 16h;Reflux; To a solution of(2R,4R)-methyl 4-hydroxypyrrolidine-2-carboxylate 31.2 (1.0 eq) and TEA (4.0 eq) in DCM (25 eq) at rt was added BnBr (1.2 eq). After the addition was completed, the reaction solution was heated to reflux for 16 h. After cooling to rt, the reaction mixture was washed with sat. aq. NaHC03 (10 mL x 2) and water (10 mL x 2), dried over Na2S04, and evaporated in vacuo to afford a residue which was purified through a silica gel column (petroleum ether/EtOAc, 2: 1) to get the desired compound 31.3, (81% yield) as a yellow oil. LCMS m/z 236.0 [M+H] +.
78% With triethylamine; In dichloromethane; for 4h;Reflux; To a suspension of D350 (128 g, 0.707 mol), triethylamine (236 g, 2.34 mol) in DCM (1.1 L)was added BnBr (121 g, 0.708 mol) slowly. The reaction was refluxed for 4 hrs. The reactionwas concentrated under high vacuum, then purified by column chromatography (PE:EA =10:1 to 5:1) to give the title compound 0351 (140 g, 78% yield) as yellow oil.1H NMR (300 MHz, CHLOROFORM-d): 57.31-7.22 (m, 5H), 4.27-4.21 (m, 1 H), 3.86 (d, J =13.2 Hz, 1H), 3.70(d, J 13.2 Hz, 1H), 3.63 (s, 3H), 3.35 (dd, J 10.0, 4.0 Hz, 1H), 3.17 (d,J = 11.2 Hz, 1 H), 3.01 (d, J = 11.2 Hz, 1 H), 2.62 (dd, J = 9.6 Hz, 4.0 Hz, 1 H), 2.42-2.34 (m,1H), 1.96-1.92 (m, IH)
With potassium carbonate; In N,N-dimethyl-formamide; at 20℃;Inert atmosphere; To a solution of 19 (1.0 equiv.) and K2CO3 (2.0 equiv.) inanhydrous DMF (2 mL) was added an appropriate alkyl halide (1.0 equiv), and themixture was stirred at room temperature or 80 C (rt for X = CH2, 80C for X = CH2CH2; CH2CH2CH2)under N2 atmosphere for appropriate hours. After completion of thereaction (monitored by TLC), the resulting mixture was concentrated in vacuo. The residue was dissolvedin ethyl acetate and washed twice with brine. The organic layer was dried, concentrated in vacuoand the residue was purified by column chromatography on silica gel eluted with DCM/EA (2:1)to give compound 20 as a colorlessoil.(2S,4R)-methyl-1-benzyl-4-hydroxypyrrolidine-2-carboxylate(20a). Yield 88%.
233.4 g With N-ethyl-N,N-diisopropylamine; In chloroform; at 0 - 75℃; for 1h; Methyl (2R,4R)-4-hydroxypyrrolidine-2-carboxylate hydrochloride (1.19 mol) was suspended in CHCl3 (2 L) in four-neck flask equipped with mechanical stirrer, reflux condenser, dropping funnel and septum and was cooled to 0 C. DIPEA (520 mL, 2.98 mol) was added dropwise at 0 C. and the reaction mixture was warmed to room temperature. Benzyl bromide (141.7 mL, 1.19 mol) was added dropwise for 1 h. The reaction mixture was heated to reflux (75 C., oil bath temp.) for 1 h and cooled to room temperature (water bath with crushed ice). Water (1 L) was added to the reaction mixture and layers were separated. Organic layer was washed with water (1*1 L), 1M NaOH (1*1 L), brine (1*1 L), dried over MgSO4, filtered and concentrated under reduced pressure to give 233.4 g (83%, after 2 steps) of the desired as a pale orange oil. ESI+MS m/z=235.95 (M+1)+; 1H NMR (700 MHz, CDCl3) delta 7.32-7.23 (m, 4H), 4.24 (m, 1H), 3.86 (d, J=13.1 Hz, 1H), 3.71 (d, J=13.1 Hz, 1H), 3.63 (s, 1H), 3.34 (dd, J=10.1, 3.8 Hz, 1H), 3.11 (d, J=10.7 Hz, 1H), 3.01 (dt, J=9.9, 1.6 Hz, 1H), 2.63 (dd, J=10.1, 3.8 Hz, 1H), 2.37 (ddd, J=14.2, 10.0, 5.7 Hz, 1H), 1.95 (m, 1H).

 

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