2,3-dibromopropanenitrile

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:110.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 2-(5-{3-[2-(4-chloro-phenylamino)-ethylamino]-propylidene}-5,11-dihydro-10-oxa-1-aza-dibenzo[a,d]cyclohepten-7-yl)-propan-2-ol (0.4 g, 0.87 mmol) in toluene (6 mL) was added triethylamine (0.48 mL, 3.44 mmol) and 2,3-dibromopropionitrile (0.19 mL, 1.72 mmol) and reaction mixture was heated to 110° C. (reflux) and stirred overnight for 18 h. The reaction mixture was concentrated in vacuo and the residue was diluted with ethyl acetate and extracted with 1.0N NaOH solution. The aqueous layer was back extracted twice with ethyl acetate. The combined organics were dried over sodium sulfate and concentrated. The crude product was purified using a short plug of silica gel using ethyl acetate to give the desired product. 1H-NMR (CDCl3) δ: 1.05 (6H, s), 2.20-2.70 (8H, 2×m), 3.00 (1H, m), 3.10-3.40 (3H, 2×m), 4.50 (1H, br, s), 5.30 (2H, br, s), 6.20 (1H, t), 6.70-6.90 (3H, 2×d), 7.10-7.35 (4H, m), 7.50 (2H, d), 8.50 (1H, dd). ESI-MS m/z: 515 (M+1), UV retention time: 2.36 min. (reflux) The reaction mixture was concentrated in vacuo the residue was diluted with ethyl acetate extracted with 1.0N NaOH solution The aqueous layer was back extracted twice with ethyl acetate The combined organics were dried over sodium sulfate concentrated The crude product was purified

Conditions: temp:110.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 2-(5-{3-[2-(4-chloro-phenylamino)-ethylamino]-propylidene}-5,11-dihydro-10-oxa-1-aza-dibenzo[a,d]cyclohepten-7-yl)-propan-2-ol (0.4 g, 0.87 mmol) in toluene (6 mL) was added triethylamine (0.48 mL, 3.44 mmol) and 2,3-dibromopropionitrile (0.19 mL, 1.72 mmol) and reaction mixture was heated to 110° C. (reflux) and stirred overnight for 18 h. The reaction mixture was concentrated in vacuo and the residue was diluted with ethyl acetate and extracted with 1.0N NaOH solution. The aqueous layer was back extracted twice with ethyl acetate. The combined organics were dried over sodium sulfate and concentrated. The crude product was purified using a short plug of silica gel using ethyl acetate to give the desired product. 1H-NMR (CDCl3) δ: 1.05 (6H, s), 2.20-2.70 (8H, 2×m), 3.00 (1H, m), 3.10-3.40 (3H, 2×m), 4.50 (1H, br, s), 5.30 (2H, br, s), 6.20 (1H, t), 6.70-6.90 (3H, 2×d), 7.10-7.35 (4H, m), 7.50 (2H, d), 8.50 (1H, dd). ESI-MS m/z: 515 (M+1), UV retention time: 2.36 min. (reflux) The reaction mixture was concentrated in vacuo the residue was diluted with ethyl acetate extracted with 1.0N NaOH solution The aqueous layer was back extracted twice with ethyl acetate The combined organics were dried over sodium sulfate concentrated The crude product was purified

Conditions: temp:110.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 2-(5-{3-[2-(4-chloro-phenylamino)-ethylamino]-propylidene}-5,11-dihydro-10-oxa-1-aza-dibenzo[a,d]cyclohepten-7-yl)-propan-2-ol (0.4 g, 0.86 mmol) in toluene (6 mL) was added triethylamine (0.48 mL, 3.44 mmol) and 2,3-dibromopropionitrile (0.19 mL, 1.72 mmol) and reaction mixture was heated to 110° C. (reflux) and stirred overnight for 18 h. The reaction mixture was concentrated in vacuo and the residue was diluted with ethyl acetate and extracted with 1.0N NaOH solution. The aqueous layer was back extracted twice with ethyl acetate. The combined organics were dried over sodium sulfate and concentrated. The crude product was purified using a short plug of silica gel using ethyl acetate to give the title compound. 1H-NMR (CDCl3) δ: 1.05 (6H, s), 2.20-2.70 (8H, 2×m), 3.00 (1H, m), 3.10-3.40 (3H, 2×m), 4.50 (1H, br, s), 5.30 (2H, br, s), 6.20 (1H, t), 6.70-6.90 (3H, 2×d), 7.10-7.35 (4H, m), 7.50 (2H, d), 8.50 (1H, dd). ESI-MS m/z: 515 (M+1), UV retention time: 2.36 min. (reflux) The reaction mixture was concentrated in vacuo the residue was diluted with ethyl acetate extracted with 1.0N NaOH solution The aqueous layer was back extracted twice with ethyl acetate The combined organics were dried over sodium sulfate concentrated The crude product was purified

Conditions: temp:110.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 2-(5-{3-[2-(4-chloro-phenylamino)-ethylamino]-propylidene}-5,11-dihydro-10-oxa-1-aza-dibenzo[a,d]cyclohepten-7-yl)-propan-2-ol (0.4 g, 0.86 mmol) in toluene (6 mL) was added triethylamine (0.48 mL, 3.44 mmol) and 2,3-dibromopropionitrile (0.19 mL, 1.72 mmol) and reaction mixture was heated to 110° C. (reflux) and stirred overnight for 18 h. The reaction mixture was concentrated in vacuo and the residue was diluted with ethyl acetate and extracted with 1.0N NaOH solution. The aqueous layer was back extracted twice with ethyl acetate. The combined organics were dried over sodium sulfate and concentrated. The crude product was purified using a short plug of silica gel using ethyl acetate to give the title compound. 1H-NMR (CDCl3) δ: 1.05 (6H, s), 2.20-2.70 (8H, 2×m), 3.00 (1H, m), 3.10-3.40 (3H, 2×m), 4.50 (1H, br, s), 5.30 (2H, br, s), 6.20 (1H, t), 6.70-6.90 (3H, 2×d), 7.10-7.35 (4H, m), 7.50 (2H, d), 8.50 (1H, dd). ESI-MS m/z: 515 (M+1), UV retention time: 2.36 min. (reflux) The reaction mixture was concentrated in vacuo the residue was diluted with ethyl acetate extracted with 1.0N NaOH solution The aqueous layer was back extracted twice with ethyl acetate The combined organics were dried over sodium sulfate concentrated The crude product was purified

Conditions: temp:110.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 2-(5-{3-[2-(4-chloro-phenylamino)-ethylamino]-propylidene}-5,11-dihydro-10-oxa-1-aza-dibenzo[a,d]cyclohepten-7-yl)-propan-2-ol (0.4 g, 0.87 mmol) in toluene (6 mL) was added triethylamine (0.48 mL, 3.44 mmol) and 2,3-dibromopropionitrile (0.19 mL, 1.72 mmol) and reaction mixture was heated to 110° C. (reflux) and stirred overnight for 18 h. The reaction mixture was concentrated in vacuo and the residue was diluted with ethyl acetate and extracted with 1.0N NaOH solution. The aqueous layer was back extracted twice with ethyl acetate. The combined organics were dried over sodium sulfate and concentrated. The crude product was purified using a short plug of silica gel using ethyl acetate to give the desired product. 1H-NMR (CDCl3) δ: 1.05 (6H, s), 2.20–2.70 (8H, 2×m), 3.00 (1H, m), 3.10–3.40 (3H, 2×m), 4.50 (1H, br, s), 5.30 (2H, br, s), 6.20 (1H, t), 6.70–6.90 (3H, 2×d), 7.10–7.35 (4H, m), 7.50 (2H, d), 8.50 (1H, dd). ESI-MS m/z: 515 (M+1), UV retention time: 2.36 min. (reflux) The reaction mixture was concentrated in vacuo the residue was diluted with ethyl acetate extracted with 1.0N NaOH solution The aqueous layer was back extracted twice with ethyl acetate The combined organics were dried over sodium sulfate concentrated The crude product was purified

Conditions: temp:110.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 2-(5-{3-[2-(4-chloro-phenylamino)-ethylamino]-propylidene}-5,11-dihydro-10-oxa-1-aza-dibenzo[a,d]cyclohepten-7-yl)-propan-2-ol (0.4 g, 0.86 mmol) in toluene (6 mL) was added triethylamine (0.48 mL, 3.44 mmol) and 2,3-dibromopropionitrile (0.19 mL, 1.72 mmol) and reaction mixture was heated to 110° C. (reflux) and stirred overnight for 18 h. The reaction mixture was concentrated in vacuo and the residue was diluted with ethyl acetate and extracted with 1.0N NaOH solution. The aqueous layer was back extracted twice with ethyl acetate. The combined organics were dried over sodium sulfate and concentrated. The crude product was purified using a short plug of silica gel using ethyl acetate to give the title compound. 1H-NMR (CDCl3) δ: 1.05 (6H, s), 2.20–2.70 (8H, 2×m), 3.00 (1H, m), 3.10–3.40 (3H, 2×m), 4.50 (1H, br, s), 5.30 (2H, br, s), 6.20 (1H, t), 6.70–6.90 (3H, 2×d), 7.10–7.35 (4H, m), 7.50 (2H, d), 8.50 (1H, dd). ESI-MS m/z: 515 (M+1), UV retention time: 2.36 min. (reflux) The reaction mixture was concentrated in vacuo the residue was diluted with ethyl acetate extracted with 1.0N NaOH solution The aqueous layer was back extracted twice with ethyl acetate The combined organics were dried over sodium sulfate concentrated The crude product was purified

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: From 4,5-bis(4-fluorophenyl)-2-trifluoromethyl-1H-imidazole (3.045 g), 2,3-dibromopropionitrile (5.33 g), anhydrous potassium carbonate (3.1 g) and triethylamine (5.2 ml) in dry DMF (19 ml) by the process as described for the preparation of Intermediate (3a) to afford a dark brown residue which was purified by FCC using gradient elution with System A (5-15% with 5% incremental increase of ethyl acetate per 500 ml eluant) to afford the title compound (1.449 g) as a white solid. νmax (CHBr3) 2229 cm-1 (C≡N). to afford a dark brown residue which was purified by FCC elution with System A (5-15% with 5% incremental increase of ethyl acetate per 500 ml eluant)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: In a manner similar to Preparation 1, react N-phenyl-N'-(phenylmethyl)-1,2-ethanediamine (0.41 g, 1.8 mmol) with 2,3-dibromopropanenitrile (0.77 g, 3.6 mmol) in toluene (5 mL) with triethylamine (0.73 g, 0.72 mmol) to obtain the title compound. In a manner similar to Preparation 1

Conditions: temp:110.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 2-(5-{3-[2-(4-chloro-phenylamino)-ethylamino]-propylidene}-5,1-dihydro-10-oxa-1-aza-dibenzo[a,d]cyclohepten-7-yl)-propan-2-ol (0.4 g, 0.87 mmol) in toluene (6 mL) was added triethylamine (0.48 mL, 3.44 mmol) and 2,3-dibromopropionitrile (0.19 mL, 1.72 mmol) and reaction mixture was heated to 110° C. (reflux) and stirred overnight for 18 h. The reaction mixture was concentrated in vacuo and the residue was diluted with ethyl acetate and extracted with 1.0N NaOH solution. The aqueous layer was back extracted twice with ethyl acetate. The combined organics were dried over sodium sulfate and concentrated. The crude product was purified using a short plug of silica gel using ethyl acetate to give the desired product. 1H-NMR (CDCl3) δ: 1.05 (6H, s), 2.20-2.70 (8H, 2×m), 3.00 (1H, m), 3.10-3.40 (3H, 2×m), 4.50 (1H, br, s), 5.30 (2H, br, s), 6.20 (1H, t), 6.70-6.90 (3H, 2×d), 7.10-7.35 (4H, m), 7.50 (2H, d), 8.50 (1H, dd). ESI-MS m/z: 515 (M+1), UV retention time: 2.36 min. (reflux) The reaction mixture was concentrated in vacuo the residue was diluted with ethyl acetate extracted with 1.0N NaOH solution The aqueous layer was back extracted twice with ethyl acetate The combined organics were dried over sodium sulfate concentrated The crude product was purified

Conditions: temp:110.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 2-(5-{3-[2-(4-chloro-phenylamino)-ethylamino]-propylidene}-5,1-dihydro-10-oxa-1-aza-dibenzo[a,d]cyclohepten-7-yl)-propan-2-ol (0.4 g, 0.86 mmol) in toluene (6 mL) was added triethylamine (0.48 mL, 3.44 mmol) and 2,3-dibromopropionitrile (0.19 mL, 1.72 mmol) and reaction mixture was heated to 110° C. (reflux) and stirred overnight for 18 h. The reaction mixture was concentrated in vacuo and the residue was diluted with ethyl acetate and extracted with 1.0N NaOH solution. The aqueous layer was back extracted twice with ethyl acetate. The combined organics were dried over sodium sulfate and concentrated. The crude product was purified using a short plug of silica gel using ethyl acetate to give the title compound. 1H-NMR (CDCl3) δ: 1.05 (6H, s), 2.20-2.70 (8H, 2×m), 3.00 (1H, m), 3.10-3.40 (3H, 2×m), 4.50 (1H, br, s), 5.30 (2H, br, s), 6.20 (1H, t), 6.70-6.90 (3H, 2×d), 7.10-7.35 (4H, m), 7.50 (2H, d), 8.50 (1H, dd). ESI-MS m/z: 515 (M+1), UV retention time: 2.36 min. (reflux) The reaction mixture was concentrated in vacuo the residue was diluted with ethyl acetate extracted with 1.0N NaOH solution The aqueous layer was back extracted twice with ethyl acetate The combined organics were dried over sodium sulfate concentrated The crude product was purified

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Analogously to Example 4, by the reaction of 2,3-dibromopropionitrile with O-(3-fluorobenzyl)-hydroxylamine, there is obtained 2-cyano-1-(3-fluorobenzyloxy)-aziridine (see Example 4d). The two invertomers can be separated by column chromatographic separation on silica gel (elution agent diethyl ether/ligroin 1/1 v/v) to give: