3-chloropropane-1-thiol

Conditions: temp:10.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a cooled (10° C.), stirred suspension of KOtBu (8.9 g, 0.080 mol) in DMSO (40 mL) was added a solution of 4-fluoronitrobenzene (11.2 g, 0.080 mol) and 3-chloropropanethiol (8.8 g, 0.080 mol) in DMSO (40 mL) over 10 minutes. The mixture was stirred at room temperature for 3.5 hours, diluted with water (1000 ml), and extracted with ether. The extracts were washed with brine, dried (MgSO4), and concentrated. Purification by flash chromatography (10% EtOAc/hexane) gave 6.2 g (34%) of product as a yellow solid m.p. 45°-48° C. The mixture was stirred at room temperature for 3.5 hours extracted with ether The extracts were washed with brine dried (MgSO4) concentrated Purification by flash chromatography (10% EtOAc/hexane)

Conditions: temp:23.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a dry THF (Aldrich anhydrous grade, 70 mL) solution of 2,3-dichloronitrobenzene (9.61 g, 50.1 mmol) and 3-chloropropanethiol (5.0 g, 45.5 mmol) was added in one portion at 23° C. KOH pellets. The resulting mixture was vigorously stirred at 23° C. for 3.5 h. The reaction mixture was filtered through a Celite plug to remove remaining KOH. The plug was washed with THF (2×50 mL). The filtrate was concentrated in vacuo to give crude 1-chloro-2-[(3-chloropropyl)sulfanyl]-3-nitrobenzene (12 g, ˜100%). The reaction mixture was filtered through a Celite plug to remove The plug was washed with THF (2×50 mL) The filtrate was concentrated in vacuo

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

Procedure: 2-Amino-4-nitro-fluorbenzene (500 mg, 3.2 mmol), 3-chloro-1 propanethiol (354 mg, 3.2 mmol), and potassium hydroxide (269 mg, 4.8 mmol) were mixed together in ethylene glycol dimethyl ether (6.4 mL) and heated at reflux for 72 hours. The reaction was filtered and the filtercake washed with chloroform. The filtrate was concentrated and purified by flash column chromatography on 10 g if silica gel and eluted with 3% methanol in chloroform to give 2-[(3-chloropropyl)sulfanyl]-5-nitrophenylamine (130 mg, 17%). 1H NMR (CDCl3, 300 MHz): δ7.49-7.48 (m, 2H), 7.38 (dd, 1H, J=7.7 Hz, J=7.7 Hz), 4.55 (s-broad, 2H), 3.64 (t, 2H, J=6.2 Hz), 3.03 (t, 2H, J=7 Hz), 2.00 (q, 2H, J=7 Hz) ppm. Mass Spec (ESI):264 (base M+H). heated at reflux for 72 hours The reaction was filtered the filtercake washed with chloroform The filtrate was concentrated purified by flash column chromatography on 10 g if silica gel eluted with 3% methanol in chloroform

Conditions: temp:23.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a dry THF (Aldrich anhydrous grade, 70 mL) solution of 2,3-dichloronitrobenzene (9.61 g, 50.1 mmol) and 3-chloropropanethiol (5.0 g, 45.5 mmol) was added in one portion at 23° C. KOH pellets. The resulting mixture was vigorously stirred at 23° C. for 3.5 h. The reaction mixture was filtered through a Celite plug to remove remaining KOH. The plug was washed with THF (2×50 mL). The filtrate was concentrated in vacuo to give crude 1-chloro-2-[(3-chloropropyl)sulfanyl]-3-nitrobenzene (12 g, ˜100%). The reaction mixture was filtered through a Celite plug to remove The plug was washed with THF (2×50 mL) The filtrate was concentrated in vacuo

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

Procedure: 2-Amino-4-nitro-fluorbenzene (500 mg, 3.2 mmol), 3-chloro-1 propanethiol (354 mg, 3.2 mmol), and potassium hydroxide (269 mg, 4.8 mmol) were mixed together in ethylene glycol dimethyl ether (6.4 mL) and heated at reflux for 72 hours. The reaction was filtered and the filtercake washed with chloroform. The filtrate was concentrated and purified by flash column chromatography on 10 g if silica gel and eluted with 3% methanol in chloroform to give 2-[(3-chloropropyl)sulfanyl]-5-nitrophenylamine (130 mg, 17%). 1H NMR (CDCl3, 300 MHz): δ7.49-7.48 (m, 2H), 7.38 (dd, 1H, J=7.7 Hz, J=7.7 Hz), 4.55 (s-broad, 2H), 3.64 (t, 2H, J=6.2 Hz), 3.03 (t, 2H, J=7 Hz), 2.00 (q, 2H, J=7 Hz) ppm. Mass Spec (ESI):264 (base M+H). heated at reflux for 72 hours The reaction was filtered the filtercake washed with chloroform The filtrate was concentrated purified by flash column chromatography on 10 g if silica gel eluted with 3% methanol in chloroform

Conditions: temp:23.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a dry THF (Aldrich anhydrous grade, 70 mL) solution of 2,3-dichloronitrobenzene (9.61 g, 50.1 mmol) and 3-chloropropanethiol (5.0 g, 45.5 mmol) was added in one portion at 23° C. KOH pellets. The resulting mixture was vigorously stirred at 23° C. for 3.5 h. The reaction mixture was filtered through a Celite plug to remove remaining KOH. The plug was washed with THF (2×50 mL). The filtrate was concentrated in vacuo to give crude 1-chloro-2-[(3-chloropropyl)sulfanyl]-3-nitrobenzene (12 g, ˜100%). The reaction mixture was filtered through a Celite plug to remove The plug was washed with THF (2×50 mL) The filtrate was concentrated in vacuo

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

Procedure: 2-amino-4-nitro-fluorbenzene (500 mg, 3.2 mmol), 3-chloro-1 propanethiol (354 mg, 3.2 mmol), and potassium hydroxide (269 mg, 4.8 mmol) were mixed together in ethylene glycol dimethyl ether (6.4 mL) and heated at reflux for 72 hours. The reaction was filtered and the filtercake washed with chloroform. The filtrate was concentrated and purified by flash column chromatography on 10 g if silica gel and eluted with 3% methanol in chloroform to give 2-[(3-chloropropyl)sulfanyl]-5-nitrophenylamine (130 mg, 17%). 1H NMR (CDCl3, 300 MHz): δ7.49-7.48 (m, 2H), 7.38 (dd, 1H, J=7.7 Hz, J=7.7 Hz), 4.55 (s-broad, 2H), 3.64 (t, 2H, J=6.2 Hz), 3.03 (t, 2H, J=7 Hz), 2.00 (q, 2H, J=7 Hz) ppm. Mass Spec (ESI):264 (base M+H). heated at reflux for 72 hours The reaction was filtered the filtercake washed with chloroform The filtrate was concentrated purified by flash column chromatography on 10 g if silica gel eluted with 3% methanol in chloroform

Conditions: temp:10.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a cooled (10° C.), stirred suspension of KOtBu (8.9 g, 0.080 mol) in DMSO (40 mL) was added a solution of 4-fluoronitrobenzene (11.2 g, 0.080 mol) and 3-chloropropanethiol (8.8 g, 0.080 mol) in DMSO (40 mL) over 10 minutes. The mixture was stirred at room temperature for 3.5 hours, diluted with water (1000 ml), and extracted with ether. The extracts were washed with brine, dried (MgSO4), and concentrated. Purification by flash chromatography (10% EtOAc/hexane) gave 6.2 g (34%) of product as a yellow solid m.p. 45°-48° C. The mixture was stirred at room temperature for 3.5 hours extracted with ether The extracts were washed with brine dried (MgSO4) concentrated Purification by flash chromatography (10% EtOAc/hexane)

Conditions: temp:23.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a dry THF (Aldrich anhydrous grade, 70 mL) solution of 2,3-dichloronitrobenzene (9.61 g, 50.1 mmol) and 3-chloropropanethiol (5.0 g, 45.5 mmol) was added in one portion at 23° C. KOH pellets. The resulting mixture was vigorously stirred at 23° C. for 3.5 h. The reaction mixture was filtered through a Celite plug to remove remaining KOH. The plug was washed with THF (2×50 mL). The filtrate was concentrated in vacuo to give crude 1-chloro-2-[(3-chloropropyl)sulfanyl]-3-nitrobenzene (12 g, ˜100%). The reaction mixture was filtered through a Celite plug to remove The plug was washed with THF (2×50 mL) The filtrate was concentrated in vacuo

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

Procedure: 2-Amino-4-nitro-fluorbenzene (500 mg, 3.2 mmol), 3-chloro-1 propanethiol (354 mg, 3.2 mmol), and potassium hydroxide (269 mg, 4.8 mmol) were mixed together in ethylene glycol dimethyl ether (6.4 mL) and heated at reflux for 72 hours. The reaction was filtered and the filtercake washed with chloroform. The filtrate was concentrated and purified by flash column chromatography on 10 g if silica gel and eluted with 3% methanol in chloroform to give 2-[(3-chloropropyl)sulfanyl]-5-nitrophenylamine (130 mg, 17%). 1H NMR (CDCl3, 300 MHz): δ7.49-7.48 (m, 2H), 7.38 (dd, 1H, J=7.7 Hz, J=7.7 Hz), 4.55 (s-broad, 2H), 3.64 (t, 2H, J=6.2 Hz), 3.03 (t, 2H, J=7 Hz), 2.00 (q, 2H, J=7 Hz) ppm. Mass Spec (ESI):264 (base M+H). heated at reflux for 72 hours The reaction was filtered the filtercake washed with chloroform The filtrate was concentrated purified by flash column chromatography on 10 g if silica gel eluted with 3% methanol in chloroform