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CAS No. : | 96558-73-5 | MDL No. : | MFCD10699543 |
Formula : | C6H5BrClN | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | JHHMLFBYFNAPDZ-UHFFFAOYSA-N |
M.W : | 206.47 | Pubchem ID : | 11843442 |
Synonyms : |
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Signal Word: | Warning | Class: | |
Precautionary Statements: | P301+P312+P330 | UN#: | |
Hazard Statements: | H302 | 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 |
---|---|---|
With diphenyl phosphoryl azide; triethylamine; In toluene; tert-butyl alcohol; at 80 - 100℃; for 20h; | Starting from 2-bromo-3-chloro-benzoic acid (500 mg; CAS 56961-26-3) dissolved in 5 ml toluene, was treated with triethylamine (0.3 ml), diphenylphosphorylazide (0.69 ml) and t-butanol (3.6 ml) and heated 2 hrs at 80 C. Additional tert-butanol (3.6 ml) was added and the solution stirred 18 hrs at 100 C. The reaction mixture was evaporated to dryness and chromatographed (silica gel; AcOEt/heptane, 1/19) to yield 2-bromo-3-chloro-phenylamine as a white solid (410 mg). MS: 305/307 (M+H+)+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
77% | With trifluoroacetic acid; In dichloromethane; at 20℃; for 3h; | Step B: 2-bromo-3-chloroaniline [0186] To tert-butyl (2-bromo-3-chlorophenyl)carbamate (0.4 g) in DCM (20 mL) was added TFA (10 mL). The reaction mixture was stirred at RT for 3 hours and then concentrated. Water (10 mL) was added to the residue, and the mixture was extracted with DCM (2 x 20 mL). The organic phase was separated, washed with aqueous saturated NaHC03 and saturated NaCl, dried over anhydrous Na2S04, and concentrated to give the title compound as a solid (0.2 g, 77%). 1H NMR (400 MHz, CDC13) delta 7.03-6.99 (IH, m), 6.85- 6.83 (IH, d, J=8.0 Hz), 6.65-6.63 (IH, d, J=8.0 Hz), 4.25 (2H, s). |