(4-iodophenyl)hydrazine

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

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

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

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

Procedure: A mixture of 10 g of 4-iodophenylhydrazine in 80 ml of acetic acid is refluxed for 5 hours. The reaction mixture is concentrated under vacuum, the residue is taken up with water, and the precipitate formed is filter-dried and washed with a propan-2-ol/PE (50/50; v/v) mixture. 9 g of the expected compound are obtained. is refluxed for 5 hours The reaction mixture is concentrated under vacuum the precipitate formed is filter-dried washed with a propan-2-ol/PE (50/50; v/v) mixture

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

Procedure: To a solution of (4-iodophenyl)hydrazine (1.0 g, 4.27 mmol) in ethanol (10 mL) was slowly added solution of 2-chloro-6-fluorobenzaldehyde (0.675 g, 4.27 mmol) in ethanol (10 mL). The reaction mass was stirred at RT for 5-6 h. The reaction mass was quenched in water and extracted with ethyl acetate. The organic layer was concentrated to afford 1.2 g of desired product. 1H NMR (300 MHz, DMSO d6): δ 6.87 (d, J=8.4 Hz, 2H), 7.26-7.36 (m, 3H), 7.53 (d, J=9.0 Hz, 2H), 8.06 (s, 1H), 10.84 (s, 1H). MS (m/z): 374.87 (M)+. The reaction mass was quenched in water extracted with ethyl acetate The organic layer was concentrated

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

Procedure: To a solution of (4-iodophenyl)hydrazine (1.0 g, 4.27 mmol) in ethanol (10 mL) was slowly added solution of 2-chloro-6-fluorobenzaldehyde (0.675 g, 4.27 mmol) in ethanol (10 mL). The reaction mass was stirred at RT for 5-6 h. The reaction mass was quenched in water and extracted with ethyl acetate. The organic layer was concentrated to afford 1.2 g of desired product. 1H NMR (300 MHz, DMSO d6): δ 6.87 (d, J=8.4 Hz, 2H), 7.26-7.36 (m, 3H), 7.53 (d, J=9.0 Hz, 2H), 8.06 (s, 1H), 10.84 (s, 1H). MS (m/z): 374.87 (M)+. The reaction mass was quenched in water extracted with ethyl acetate The organic layer was concentrated

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

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

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

Procedure: To a solution of (4-iodophenyl)hydrazine (1.0 g, 4.27 mmol) in ethanol (10 mL) was slowly added solution of 2-chloro-6-fluorobenzaldehyde (0.675 g, 4.27 mmol) in ethanol (10 mL). The reaction mass was stirred at RT for 5-6 h. The reaction mass was quenched in water and extracted with ethyl acetate. The organic layer was concentrated to afford 1.2 g of desired product. 1H NMR (300 MHz, DMSO d6): δ 6.87 (d, J=8.4 Hz, 2H), 7.26-7.36 (m, 3H), 7.53 (d, J=9.0 Hz, 2H), 8.06 (s, 1H), 10.84 (s, 1H). MS (m/z): 374.87 (M)+. The reaction mass was quenched in water extracted with ethyl acetate The organic layer was concentrated

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

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

Procedure: Analogously to the process described in Example 1A, 5.0 g (21.36 mmol) of 4-iodophenylhydrazine and 4-acetylpyridine give 6.67 g (92% of theory) of the title compound.

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

Procedure: Analogously to the process described in Example 1A, 5.0 g (21.36 mmol) of 4-iodophenylhydrazine and 3-acetylpyridine give 5.15 g (71% of theory) of the title compound.