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CAS No. : | 100622-34-2 | MDL No. : | MFCD03425925 |
Formula : | C14H11BO2 | Boiling Point : | - |
Linear Structure Formula : | C14H9B(OH)2 | InChI Key : | VHHDLIWHHXBLBK-UHFFFAOYSA-N |
M.W : | 222.05 | Pubchem ID : | 15510213 |
Synonyms : |
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Signal Word: | Warning | Class: | |
Precautionary Statements: | P280-P305+P351+P338 | UN#: | |
Hazard Statements: | H317-H319 | Packing Group: | |
GHS Pictogram: |
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* 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 |
---|---|---|
73% | With tetrakis(triphenylphosphine) palladium(0); potassium carbonate; In tetrahydrofuran; water; for 5h;Reflux; Inert atmosphere; | In the flask, 9-indoleboronic acid (5 g, 22 mmol) was added.<strong>[2620-76-0]2-(4-bromophenyl)-1-phenyl-1H-benzimidazole</strong> (7.9 g, 22 mmol),Potassium carbonate (6g, 44mmol),Tetrahydrofuran (100mL),Water (50mL),Tetrakistriphenylphosphine palladium (0.5g),Heated under nitrogen for 5 hours,cool down,The crude product was purified by column chromatography to give 7.1 g,The yield was 73%. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
28% | With tetrakis(triphenylphosphine) palladium(0); potassium carbonate; In tetrahydrofuran; water; for 48h;Reflux; | Intermediate 4-1 (0.300 g, 1.33 mmol), anthracen-10-yl-10-boronic acid (1.60 mmol), and tetrakis(triphenylphosphine)palladium (0) (0.077 g, 0.07 mmol) were added to a 100 mL round-bottom flask, and a mixture of THF and 2 normal (N) K2CO3 aqueous solution (2:1 (v/v)) was added thereto, and the mixed solution was refluxed for 2 days. After completion of the reaction, water was poured into the reaction mixture, and the resulting mixture was cooled. An organic layer extracted therefrom by using CH2Cl2 (100 mL*4 times) was dried with MgSO4, and concentrated. The resulting product thus obtained was purified by silica gel chromatography while increasing the polarity of the eluent from CH2Cl2:n-hexane (at 1:2 (v/v)) to CH2Cl2:n-hexane (at 1:1 (v/v)), thereby obtaining Compound 4 (yellow powder, yield of 28%). 1H NMR (300 MHz, CDCl3) delta: 6.55 ppm (d, J=9.6 Hz, 1H), 7.35-7.41 ppm (m, 3H), 7.46-7.51 ppm (m, 3H), 7.59-7.62 ppm (m, 2H), 7.70 ppm (d, J=7.5 Hz, 1H), 7.88 ppm (d, J=9.6 Hz, 1H), 8.08 ppm (d, J=8.4 Hz, 2H), 8.56 ppm (s, 1H). 13C NMR (126 MHz, CDCl3) delta: 117.00 ppm, 118.31 ppm, 119.79 ppm, 125.43 ppm, 126.12 ppm, 126.17 ppm, 127.68 ppm, 127.93 ppm, 128.69 ppm, 129.96 ppm, 131.40 ppm, 134. 62 ppm, 143.40 ppm, 143.44 ppm, 154.29 ppm, 160.87 ppm. |
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