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CAS No. : | 22237-13-4 | MDL No. : | MFCD00674028 |
Formula : | C8H11BO3 | Boiling Point : | - |
Linear Structure Formula : | (C2H5OC6H4)B(OH)2 | InChI Key : | WRQNDLDUNQMTCL-UHFFFAOYSA-N |
M.W : | 165.98 | Pubchem ID : | 2734351 |
Synonyms : |
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Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H315-H319-H335 | Packing Group: | N/A |
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 |
---|---|---|
91% | With dichloro bis(acetonitrile) palladium(II); C95H120N20O10(10+)*10F6P(1-); potassium carbonate; In ethanol; at 50℃; for 1.5h; | General procedure: In a typical run, a mixture of aryl bromide (0.50 mmol),phenylboronic acid (0.55 mmol), K2CO3 (1.5 mmol),0.2 mol% ligand, 1 mol% PdCl2(CH3CN)2 in 1.5 mL of ethanol were stirred at 50 C for 1.5 h under air. Solvent ethanol was removed completely under vacuum degree0.09 MPa at 45 C to give a crude product. The pure product was isolated by column chromatography on silica. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
21% | With potassium carbonate;tetrakis(triphenylphosphine) palladium(0); In ethanol; water; toluene; at 120℃; for 6h; | To a solution of trifluoro-methanesulfonic acid 9-benzhydryloxy-7-(4-fluoro- benzyl)-8-oxo-7,8-dihydro-6H-pyrrolo [3,4-g]quinolin-5-yl ester 46 (40 mg, 0.064 mmol) dissolved in toluene (3 mL)/ ethanol (0.6 mL)/ water (0.4 mL) was added K2C03 (27 mg, 0.192 mmol), 4-ethoxyphenolboronic acid (22 mg, 0.128 mmol) and tetrakis-(triphenylphosphine)-palladium(0) (15 mg, 0.013mmol). The reaction mixture in the flask was flashed with argon three times. It was then heated to 120C under argon 3 hours. The reaction was monitored by TLC (EtOAc/hexane 3/7) (Rf46 = 0.6, Rf275 = 0.4) and LC/MS. After cooling to room temperature, the mixture was diluted with EtOAc (20mL) and washed with IN HCl, saturated NaHC03 and brine. The organic phase was dried (MgS04), filtered and concentrated in vacuo. The residue was purified by silica gel chromatography ( ethylacetate/hexane - 1/3) to afford 9- benzhydryloxy-5-(4-ethoxy-phenyl)-7-(4-fluoro-benzyl)-6,7-dihydro-pyrrolo[3,4- g] quinolin-8-one 275 (8.0 mg, 21%) as a solid: 1H NMR (CDC13) No. 9.0 (d, 1H), 8.1 (s, 1H), 7.9 (d, 1H), 7.8-7.5 (dd, 4H), 7.5 (s, 1H), 7.4 (dd, 2H), 7.3-7.1 (m, 10H), 7.0 (t, 2H), 4.8 (s, 2H), 4.1 (m, 2H), 4.0 (s, 1H), 1.4 (t, 3H) ; MS: 595 (M+1). |
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