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CAS No. : | 330793-01-6 | MDL No. : | MFCD02179439 |
Formula : | C17H26BNO4 | Boiling Point : | No data available |
Linear Structure Formula : | (CH3)3COCONHC6H4BO2C2(CH3)4 | InChI Key : | HSJNIOYPTSKQBD-UHFFFAOYSA-N |
M.W : | 319.20 | Pubchem ID : | 2734617 |
Synonyms : |
|
Chemical Name : | tert-Butyl (4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)carbamate |
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 |
---|---|---|
72% | With tetrakis(triphenylphosphine) palladium(0); potassium carbonate; In 1,4-dioxane; at 110℃; for 12h; | General procedure: Palladium tetraphenylphosphine (115mg, 0.10mmol) and potassium carbonate solution (2M, 100muL) were added to a solution of 4-bromo-2-nitrophenol (150mg, 0.69mmol) and boronic ester (300mg, 0.82mmol) in dioxane (40mL) and the mixture was refluxed at 110°C for 12h. After 12h, the reaction mixture was concentrated to dryness and the residue so obtained was purified via column chromatography (SiO2, 100:1, CH2Cl2: acetone) to afford desired product as a yellow amorphous solid (136mg, 60percent). |
72% | With tetrakis(triphenylphosphine) palladium(0); potassium carbonate; In 1,4-dioxane; at 110℃; for 12h;Reflux; | tert-butyl (4'-hydroxy-2'-nitro-[1,1'-biphenyl]-4-yl)carbamate (32b): Palladium tetraphenylphosphine (0.10 mmol) and potassium carbonate solution (2M, 100 muL) were added to a solution of phenol (30b, 0.69 mmol) and boronic ester (0.82 mmol) in dioxane (10 mL) and the mixture was refluxed at 110 oC for 12 hours. After 12 hours, the reaction mixture was concentrated to dryness and the residue so obtained was purified via column chromatography (SiO2, 100:1, CH2Cl2:acetone) to afford desired product as a yellow amorphous solid (210 mg, 72percent). 1H NMR (500 MHz, chloroform-d) delta 7.40 (d, J = 8.3 Hz, 2H), 7.32 (d, J = 2.6 Hz, 1H), 7.28 (d, J = 5.0 Hz, 1H), 7.23? 7.17 (m, 2H), 7.07 (dd, J = 8.4, 2.6 Hz, 1H), 6.53 (s, 1H), 5.47 (s, 1H), 1.54 (s, 9H).13C NMR (126 MHz, CDCl3) delta 155.35, 153.00, 149.83, 138.39, 133.34, 132.05, 129.00, 128.64, 119.86, 118.99, 111.40, 81.16, 28.64. HRMS (ESI-) m/z [M-H+] calcd for C17H18N2O5 329.1137, found 329.1132 |
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