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Chemical Structure| 143878-85-7 Chemical Structure| 143878-85-7

Structure of 143878-85-7

Chemical Structure| 143878-85-7

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Product Details of [ 143878-85-7 ]

CAS No. :143878-85-7
Formula : C15H19NO2
M.W : 245.32
SMILES Code : O=C(C1=C(C)N([C@H](C2=CC=CC=C2)C)CC1)OC

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Application In Synthesis of [ 143878-85-7 ]

* 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 [ 143878-85-7 ]

[ 143878-85-7 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 2627-86-3 ]
  • [ 38806-09-6 ]
  • [ 143878-85-7 ]
YieldReaction ConditionsOperation in experiment
In toluene; for 12h;Heating / reflux; Reference Example 88 A mixture of <strong>[38806-09-6]methyl 1-acetylcyclopropanecarboxylate</strong> (1.40 g), [(1S)-1-phenylethyl]amine (1.26 mL), and toluene (18 mL) was heated under reflux for 12 hours. The reactant was concentrated after cooling to room temperature. The obtained residue was purified by silica gel column chromatography to obtain methyl 2-methyl-1-[(1S)-1-phenylethyl]-4,5-dihydro-1H-pyrrole-3-carboxylate (1.29 g). 1H-NMR (300 MHz, CDCl3) δ: 1.54 (3H, d, J=7.2 Hz), 2.33 (3H, s), 2.64-2.72 (2H, m), 3.10-3.20 (1H, m), 3.37-3.48 (1H, m), 3.63 (3H, s), 4.88 (1H, q, J=7.2 Hz), 7.21-7.38 (5H, m).
0.37 mol In toluene; at 130 - 140℃; for 22h;Dean-Stark; Step b. A solution of methyl 1-acetylcyclopropane-l-carboxylate (0.70 mol) and (S)-l- phenylethan-1 -amine (0.84 mol) in toluene (1000 ml) was charged in a dean stark glass assembly. The reaction mixture was heated at a temperature (130-140C) to remove the water by azeotropic distillation. The process was continued for 22 h. The reaction mixture was allowed to cool to rt and concentrated under reduced pressure. The resulting residue was purified by column chromatography (2% EtOAc in hexane) yielding methyl (S)-2-methyl-l- (l-phenylethyl)-4,5-dihydro-lH-pyrrole-3-carboxylate (0.37 mol). MS: ES+ 246.33; 1H NMR (400 MHz, DMSO-d6) δ ppm 7.36 - 7.39 (m, 2 H), 7.26 - 7.29 (m, 3 H), 4.95 (q, J=7.01 Hz, 1 H), 3.50 (s, 3 H), 3.41 - 3.49 (m, 1 H), 3.03 - 3.10 (m, 1 H), 2.55 - 2.57 (m, 2 H), 2.25 (s, 3 H), 1.48 (d, J=7.01 Hz, 3 H).
 

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