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CAS No. : | 171364-80-0 | MDL No. : | MFCD02179438 |
Formula : | C14H19BO4 | Boiling Point : | - |
Linear Structure Formula : | CH3O2CC6H4B(O2C2(CH3)4) | InChI Key : | REIZEQZILPXYKS-UHFFFAOYSA-N |
M.W : | 262.11 | Pubchem ID : | 2773500 |
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 |
---|---|---|
With potassium phosphate;tetrakis(triphenylphosphine) palladium(0); In DMF (N,N-dimethyl-formamide); at 100℃; | Production Example 51 methyl 4-(6-bromoimidazo[1,2-a]pyridin-3-yl)benzoate 2.3 g methyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate prepared according to T. Ishiyama et al., J. Org. Chem., 60, 7508 (1995), 2.0 g <strong>[474706-74-6]6-bromo-3-iodoimidazo[1,2-a]pyridine</strong> (compound in Production Example 49), 2. 5 g potassiumphosphate, 360 mg tetrakistriphenyl phosphine palladium and 30 ML N, N-dimethylformamide were heated at 100C under nitrogen atmosphere.. Insolubles were filtered off, the solvent was removed, and the residue was purified by NH silica gel column chromatography (hexane/ethyl acetate) and recrystallized from ethyl acetate to give 1.39 g of the title compound (colorless crystals).1H-NMR (CDCl3) delta: 3.97(s, 3H), 7.32(dd, J=9.6, 2.0Hz, 1H), 7.62(d, J=9.6Hz, 1H), 7.65(dt, J=8.8, 2.0Hz, 2H), 7.79(br.s, 1H), 8.21(dt, J=8.8, 2.0Hz, 2H), 8.50(br.s, 1H) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
72.7% | With tetrakis(triphenylphosphine) palladium(0); potassium carbonate; In water; toluene; at 100℃; for 24h;Inert atmosphere; | A mixture of 3,6-bis(5-bromothiophen-2-yl)-2,5-bis(2-ethylhexyl)-2,5-dihydropyrrolo[3,4-c] pyrrole-1,4-dione (5) (1.97 g,2.90 mmol), methyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate (6) (0.76 g, 2.90 mmol), K2CO3 (1.60 g, 11.60 mmol),Pd(PPh3)4 (0.17 g, 5 mol%) and toluene/H2O (60 mL, 3/1, V/V) wasadded to the reaction flask under a N2 atmosphere and then stirred at100 C for 24 h. After cooling to the room temperature, the reactionmixture was extracted with CH2Cl2, washed with water and brine,and dried over MgSO4. The crude product was purified by columnchromatography (CH2Cl2/petroleum ether, 1/4, V/V) on silica gel toyield a purplish red solid (1.55 g, yield 72.7%). 1H NMR (400 MHz,CDCl3, delta/ppm): 8.97 (d, J = 4.2,1H), 8.11 (d, J = 8.5, 3H), 7.76 (d, J = 4.5,3H), 7.58 (d, J = 4.3, 1H), 4.11-4.04 (m, 3H), 3.96 (s, 4H), 1.93 (s, 2H),1.42-1.26 (m, 16H), 0.94-0.83 (m, 12H). MALDI-TOF MS (m/z): calcdfor (C76H75N3O4S3): 736.2004; Found: 736.2350. |
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