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CAS No. : | 81382-46-9 | MDL No. : | MFCD00464298 |
Formula : | C7H6N2O | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | VEDLFQPHHBOHIR-UHFFFAOYSA-N |
M.W : | 134.14 | Pubchem ID : | 21453601 |
Synonyms : |
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Chemical Name : | 1H-Indazol-7-ol |
Signal Word: | Warning | Class: | |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | |
Hazard Statements: | H315-H319-H335 | 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 |
---|---|---|
55% | With di-isopropyl azodicarboxylate; triphenylphosphine; In tetrahydrofuran; at 60℃; for 3.0h;Inert atmosphere; | To a solution of lH-indazol-7-ol (250 mg, 1.86 mmol) and tert-butyl (2S,4S)-4-hydroxy-2- methylpyrrolidine-l-carboxylate (312 mg, 1.55 mmol) in THF (25 mL) was added PPI13 (813 mg, 3.10 mmol) and DIAD (627 mg, 3.10 mmol) and the mixture stirred at 60C for 3 h under N2. The solvent was removed in vacuo and the residue purified by columnchromatograph on silica gel (petroleum ether/EtOAc; 3: 1) to give the title compound as a yellow solid (273 mg, 55%). LCMS (ESI): [M+H] = 318.0; 1H NMR (400 MHz, CDCU) d: 10.53 (brs, 1H), 8.03 (s, 1H), 7.33 (d, 7=8.0 Hz, 1H), 7.03-7.07 (m, 1H), 6.66 (d, 7=8.0 Hz, 1H), 5.04-5.05 (m, 1H), 4.09-4.14 (m, 1H), 3.79-3.82 (m, 2H), 2.38-2.45 (m, 1H), 2.07-2.11 (m, 1H), 1.47 (s, 9H), 1.36 (d, 7=5.6 Hz, 3H). |