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CAS No. : | 42113-13-3 | MDL No. : | MFCD06203848 |
Formula : | C9H10O3 | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | QBMHMOKIFSCFCX-UHFFFAOYSA-N |
M.W : | 166.17 | Pubchem ID : | 11240684 |
Synonyms : |
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Signal Word: | Warning | Class: | |
Precautionary Statements: | P261-P273-P305+P351+P338 | UN#: | |
Hazard Statements: | H315-H319-H335-H412 | Packing Group: | |
GHS Pictogram: |
* 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.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
75% | With di-isopropyl azodicarboxylate; triphenylphosphine; In tetrahydrofuran; at 0 - 20℃; for 1h; | To a solution of methyl 4-hydroxy-3-methylbenzoate (0.30 g, 1.80 mmol), (R)- tert-butyl-3-hydroxypyrrolidine-1-carboxylate (0.34 g, 1.80 mmol), and triphenylphosphine (0.58 g, 2.20 mmol) in dry THF (15 mL) was added diisopropyl azodicarboxylate (0.44 g, 2.20 mmol) at 0 ^C. Then, the temperature was allowed to rise to room temperature and stir for another 1 h. Upon completion, the reaction was diluted with CH2Cl2 (150 mL), washed with NaOH (1M) (50 mL × 2) and brine (50 mL × 2), dried over Na2SO4, and concentrated to give the crude product. The residue was purified by column chromatography (silica gel, hexanes:acetone = 8:1 to 6:1) to yield 65 (0.45 g, 75% yield) as a white solid.1H NMR (500 MHz, CDCl3): δ ppm 7.71-7.68 (m, 2H), 6.64 (d, J = 8.5 Hz, 1H), 4.84-4.80 (m, 1H), 3.72 (s, 3H), 3.51-3.36 (m, 4H), 2.05 (s, 3H), 2.04-2.00 (m, 2H), 1.32 (s, 9H).13C NMR (125 MHz, CDCl3): δ ppm 166.87, 159.15, 154.61, 154.53, 132.44, 129.18, 127.59, 127.54, 122.47, 111.21, 79.53, 76.73, 75.91, 51.82, 51.76, 51.51, 44.27, 43.91, 31.72, 31.00, 28.55. MS (ESI) m/z = 336.2 [M + H]+. |
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