Structure of 64591-03-3
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The BI-3802 was designed by Boehringer Ingelheim and could be obtained free of charge through the Boehringer Ingelheim open innovation portal opnMe.com, associated with its negative control.
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CAS No. : | 64591-03-3 |
Formula : | C3H2Br2N2 |
M.W : | 225.87 |
SMILES Code : | BrC1=CN=C(Br)N1 |
MDL No. : | MFCD02179517 |
InChI Key : | KJBTZMYWBSAZAQ-UHFFFAOYSA-N |
Pubchem ID : | 7204871 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H332-H335 |
Precautionary Statements: | P280-P305+P351+P338-P310 |
* 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 |
---|---|---|
118 mg; 356 mg | With caesium carbonate; In dimethyl sulfoxide; at 130℃; for 2.5h; | dimethylsulfoxide (30 mL) suspension of (2S) -2 - [4- (tert-butyl) phenoxy] methyl}oxirane (1.37 g), 2,4-dibromo -1H- imidazole (1.00 g) and cesium carbonate(2.16 g) was stirred for 2.5 hours at 130 . The reaction mixture was allowed to cool to room temperature, and afterthe additionof water and ethyl acetate, the organic layer and the aqueous layer wereseparated. The aqueous layer was extracted twice with ethyl acetate, and the organiclayer was combined, dried over anhydrous magnesium sulfate, and concentratedunder reduced pressure. The residue was purified by column chromatography(Reveleris,mobile phase: hexane / ethyl acetate = 70/30 ~ 20/80; v / v)to give the title compound (Compound 2: 118 mg, colorless solid) and the titlecompound (Compound 3 : 356 mg, colorless solid). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
2,4-Dibromo-1H-imidazole (3.0 g, 13.3 mmol) was taken in THF (25.0 mL) followed by addition of NaH (0.98 g, 20.0 mmol) at 0 C. The reaction mixture was stirred at RT for 15 min followed by addition of chloro(methoxy)methane (1.2 g, 14.6 mmol). The reaction mixture was stirred to RT for 1 h and completion of reaction was monitored by TLC and LCMS. After completion of reaction, ice cooled water (200 mL) was added and the mixture extracted with EtOAc (300 mL). The organic layer was separated, dried over anhydrous sodium sulfate and concentrated under reduced pressure to obtain 2,4-dibromo-1-(methoxymethyl)imidazole (4.0 g) as a crude product. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
75% | To a stirred solution of 2,4-dibromo-lH-imidazole (1.00 g, 4.43 mmol) in DMF (15 mL) at 0 C was added sodium hydride (60% dispersion in mineral oil) (266 mg, 6.64 mmol). The reaction was stirred for 30 min, then benzyl bromide(0.789 mL, 6.64 mmol) was added. The reaction was allowed to warm to RT and stirred for a further 16 h. The solvent was removed in vacuo and the crude residue redissolved in MeOH (6 mL) and purified by MDAP (Method B) to afford the title compound as a light brown oil (1.16 g, 3.30 mmol, 75%). LCMS (System B): tRET = 1.10 min; MH+ 315, 317, 319. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With bis(acetato)bis(triphenylphosphine)palladium(0); In toluene; for 24h;Reflux; | General procedure: To a stuffed solution of 2,4-dibromothiazole (2) (4 mmol) in dimethylformamide (DMF) (15 mL), the coffesponding amine (1) (4 mmol) and diisopropylethylamine (DIPEA) (1.55 g, 2 mL, 12 mmol) were added under a stream of nitrogen.The reaction mixture was stirred at 80C for 4-10 h (monitored by Thin-layer chromatography (TLC)), then cooled to room temperature (rt), quenched with cold water (H20) (50 mL) and extracted with ethyl acetate (EtOAc) (3x30 mL). The combined organic layer was washed with H20 (2x10 mL), dried over sodium sulfate and concentrated to give the crude compound 3. The resulting product 3, the corresponding imidazole 4 (12 mmol),palladium(II)bis(triphenylphosphine) diacetate (Pd(OAc)2(PPh3)2) (0.1 mmol) and toluene (50 mL) were refluxed for 24 h. After cooling, the organic solvent was removed under vacuum. The resulting residue was purified by preparative high-performance liquid chromatography (HPLC) (EtOAc - Hexane (1:5) as eluent) to give the final product 5 as a solid. It was additionally purified by reverse phase HPLC (gradient acetonitrile (MeCN) - H20, 20 to 80% of MeCN aseluent). A compound of formula S are examples 1-15, 17-22, 24-40, 42-50 and 52-62. |