2-(diethylamino)ethanethiol;hydrochloride

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

Procedure: The oil prepared in Step 10 (1.5 g, 5.95 mmol) is dissolved under argon in methanol (22 mL). To this solution is added 2-diethylaminoethanethiol hydrochloride (1 g, 5.95 mmol), piperidine (0.78 mL, 7.85 mmol) and benzyltrimethylammonium hydroxide (0.25 mL, 0.6 mmol) , and the mixture is stirred at room temperature for 16 hours. The solvent is removed on a rotary evaporator and then the residue is purified by flash chromotography on silica gel to give the pure title compound. The solvent is removed on a rotary evaporator the residue is purified by flash chromotography on silica gel

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

Procedure: 4.75 g of 2-diethylaminoethyl mercaptan hydrochloride are slowly treated with 3.3 g of a 50% strength sodium hydride in oil suspension in 100 ml of THF under a nitrogen atmosphere. After 1 hour, 5 g of 3-phenyl-4-nitrofuroxan are introduced and the mixture is stirred for 20 hours. The inorganic salts are filtered off with suction and the filtrate is concentrated. The residue is taken up in water and extracted with methylene chloride. After drying and concentrating, the residue is dissolved in ethyl acetate and the product is precipitated by introducing hydrogen chloride and filtered off with suction. The inorganic salts are filtered off with suction the filtrate is concentrated extracted with methylene chloride After drying concentrating the residue is dissolved in ethyl acetate the product is precipitated by introducing hydrogen chloride filtered off with suction

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

Procedure: 4.75 g of 2-diethylaminoethyl mercaptan hydrochloride are slowly treated with 3.3 g of a 50% strength sodium hydride in oil suspension in 100 ml of THF under a nitrogen atmosphere. After 1 hour, 5 g of 3-phenyl-4-nitrofuroxan are introduced and the mixture is stirred for 20 hours. The inorganic salts are filtered off with suction and the filtrate is concentrated. The residue is taken up in water and extracted with methylene chloride. After drying and concentrating, the residue is dissolved in ethyl acetate and the product is precipitated by introducing hydrogen chloride and filtered off with suction. The inorganic salts are filtered off with suction the filtrate is concentrated extracted with methylene chloride After drying concentrating the residue is dissolved in ethyl acetate the product is precipitated by introducing hydrogen chloride filtered off with suction

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

Procedure: 2-(Diethylamino)ethanethiol hydrochloride (5.0 g, 29 mmol) was added to a 250 mL round-bottom flask, 20 mL methanol was added, and the solution cooled in an ice bath with stirring. Sodium hydroxide (2.34 g, 58 mmol), dissolved in water (15 mL), was added, followed by slow addition of 2-bromoethanol (5.9 g, 47 mmol). Stirring was continued while the reaction mixture was allowed to warm to room temperature overnight. The methanol and water were removed under reduced pressure, and the residue dissolved in ethyl acetate (100 mL), washed with water (3×20 mL), dried over magnesium sulfate, and concentrated under reduced pressure to give 2-[2-(diethylamino)-ethylthio]ethanol as a yellow oil (4.5 g, 87% yield). LC-MS (ES+): m/z=178 [C8H19NOS+H+] for product peak. A 1.0 g aliquot of the crude 2-[2-(diethylamino)ethylthio]ethanol was purified by flash chromatography on silica cartridges, eluting with a gradient of 100% hexane to 100% ethyl acetate over 5 minutes, to give 0.78 g pure 2-[2-(diethylamino)ethylthio]ethanol as a colorless oil after evaporation of the solvents, and the remaining 3.5 g similarly purified, eluting with a gradient of 100% hexane to 100% ethyl acetate over 20 minutes, to give an additional 3.11 g pure 2-[2-(diethylamino)ethylthio]ethanol. the solution cooled in an ice bath was added Stirring The methanol and water were removed under reduced pressure the residue dissolved in ethyl acetate (100 mL) washed with water (3×20 mL) dried over magnesium sulfate concentrated under reduced pressure

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

Procedure: 2-(Diethylamino)ethanethiol hydrochloride (5.0 g, 29 mmol) was added to a 250 mL round-bottom flask, 20 mL methanol was added, and the solution cooled in an ice bath with stirring. Sodium hydroxide (2.34 g, 58 mmol), dissolved in water (15 mL), was added, followed by slow addition of 2-bromoethanol (5.9 g, 47 mmol). Stirring was continued while the reaction mixture was allowed to warm to room temperature overnight. The methanol and water were removed under reduced pressure, and the residue dissolved in ethyl acetate (100 mL), washed with water (3×20 mL), dried over magnesium sulfate, and concentrated under reduced pressure to give 2-[2-(diethylamino)-ethylthio]ethanol as a yellow oil (4.5 g, 87% yield). LC-MS (ES+): m/z=178 [C8H19NOS+H+] for product peak. A 1.0 g aliquot of the crude 2-[2-(diethylamino)ethylthio]ethanol was purified by flash chromatography on silica cartridges, eluting with a gradient of 100% hexane to 100% ethyl acetate over 5 minutes, to give 0.78 g pure 2-[2-(diethylamino)ethylthio]ethanol as a colorless oil after evaporation of the solvents, and the remaining 3.5 g similarly purified, eluting with a gradient of 100% hexane to 100% ethyl acetate over 20 minutes, to give an additional 3.11 g pure 2-[2-(diethylamino)ethylthio]ethanol. the solution cooled in an ice bath was added Stirring The methanol and water were removed under reduced pressure the residue dissolved in ethyl acetate (100 mL) washed with water (3×20 mL) dried over magnesium sulfate concentrated under reduced pressure

Conditions: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 400 mg (1.4 mmol) of 10-chloro-8-hydroxy-11H-indeno[1,2-b]quinolin-11-one, 629 mg (8.5 mmol) of lithium carbonate, 963 mg (5.7 mmol) of 2-diethylaminoethanethiol hydrochloride and 8 ml of N,N-dimethylformamide was stirred for 5 hours with heating at 90° C. After completion of the reaction, the reaction mixture was added to water, and precipitated crystals were collected by filteration. The crystals were recrystallized from ethanol, giving 310 mg of the title compound (yield: 57.7%). The property values are shown in Table 1. After completion of the reaction precipitated crystals were collected by filteration The crystals were recrystallized from ethanol

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

Procedure: The oil prepared in Step 10 (1.5 g, 5.95 mmol) is dissolved under argon in methanol (22 mL). To this solution is added 2-diethylaminoethanethiol hydrochloride (1 g, 5.95 mmol), piperidine (0.78 mL, 7.85 mmol) and benzyltrimethylammonium hydroxide (0.25 mL, 0.6 mmol) , and the mixture is stirred at room temperature for 16 hours. The solvent is removed on a rotary evaporator and then the residue is purified by flash chromotography on silica gel to give the pure title compound. The solvent is removed on a rotary evaporator the residue is purified by flash chromotography on silica gel

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

Procedure: The oil prepared in Step 10 (1.5 g, 5.95 mmol) is dissolved under argon in methanol (22 mL). To this solution is added 2-diethylaminoethanethiol hydrochloride (1 g, 5.95 mmol), piperidine (0.78 mL, 7.85 mmol) and benzyltrimethylammonium hydroxide (0.25 mL, 0.6 mmol) , and the mixture is stirred at room temperature for 16 hours. The solvent is removed on a rotary evaporator and then the residue is purified by flash chromotography on silica gel to give the pure title compound. The solvent is removed on a rotary evaporator the residue is purified by flash chromotography on silica gel

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

Procedure: 4.75 g of 2-diethylaminoethyl mercaptan hydrochloride are slowly treated with 3.3 g of a 50% strength sodium hydride in oil suspension in 100 ml of THF under a nitrogen atmosphere. After 1 hour, 5 g of 3-phenyl-4-nitrofuroxan are introduced and the mixture is stirred for 20 hours. The inorganic salts are filtered off with suction and the filtrate is concentrated. The residue is taken up in water and extracted with methylene chloride. After drying and concentrating, the residue is dissolved in ethyl acetate and the product is precipitated by introducing hydrogen chloride and filtered off with suction. The inorganic salts are filtered off with suction the filtrate is concentrated extracted with methylene chloride After drying concentrating the residue is dissolved in ethyl acetate the product is precipitated by introducing hydrogen chloride filtered off with suction

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

Procedure: 2-(Diethylamino)ethanethiol hydrochloride (5.0 g, 29 mmol) was added to a 250 mL round-bottom flask, 20 mL methanol was added, and the solution cooled in an ice bath with stirring. Sodium hydroxide (2.34 g, 58 mmol), dissolved in water (15 mL), was added, followed by slow addition of 2-bromoethanol (5.9 g, 47 mmol). Stirring was continued while the reaction mixture was allowed to warm to room temperature overnight. The methanol and water were removed under reduced pressure, and the residue dissolved in ethyl acetate (100 mL), washed with water (3×20 mL), dried over magnesium sulfate, and concentrated under reduced pressure to give 2-[2-(diethylamino)-ethylthio]ethanol as a yellow oil (4.5 g, 87% yield). LC-MS (ES+): m/z=178 [C8H19NOS+H+] for product peak. A 1.0 g aliquot of the crude 2-[2-(diethylamino)ethylthio]ethanol was purified by flash chromatography on silica cartridges, eluting with a gradient of 100% hexane to 100% ethyl acetate over 5 minutes, to give 0.78 g pure 2-[2-(diethylamino)ethylthio]ethanol as a colorless oil after evaporation of the solvents, and the remaining 3.5 g similarly purified, eluting with a gradient of 100% hexane to 100% ethyl acetate over 20 minutes, to give an additional 3.11 g pure 2-[2-(diethylamino)ethylthio]ethanol. the solution cooled in an ice bath was added Stirring The methanol and water were removed under reduced pressure the residue dissolved in ethyl acetate (100 mL) washed with water (3×20 mL) dried over magnesium sulfate concentrated under reduced pressure

Conditions: temp:160.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Trifluoro-methanesulfonic acid 3-cyano-6,6-dimethyl-11-oxo-6,11-dihydro-5H-benzo[b]carbazol-8-yl ester (Compound B1, 25 mg, 0.057 mmol) was dissolved in dimethoxyethane (0.5 mL), added with 2-diethylaminoethanethiol hydrochloric acid salt (19.6 mg, 2 eq.), Pd2(dba)3 (2.6 mg, 0.05 eq.), Xantphos (3.3 mg, 0.1 eq.) and DIPEA (0.06 mg, 6 eq.), and the mixture was stirred at 160° C. for 30 min. The reaction solution was added to water, extracted with ethyl acetate, and dried over magnesium sulfate. The drying agent was removed by filtration and the residues obtained after concentration under reduced pressure were purified by silica gel column chromatography (dichloromethane/methanol) to obtain the target compound (white amorphous, 22.4 mg, 93%). extracted with ethyl acetate dried over magnesium sulfate The drying agent was removed by filtration the residues obtained after concentration under reduced pressure were purified by silica gel column chromatography (dichloromethane/methanol) to obtain the target compound (white amorphous, 22.4 mg, 93%)

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

Procedure: The oil prepared in Step 10 (1.5 g, 5.95 mmol) is dissolved under argon in methanol (22 mL). To this solution is added 2-diethylaminoethanethiol hydrochloride (1 g, 5.95 mmol), piperidine (0.78 mL, 7.85 mmol) and benzyltrimethylammonium hydroxide (0.25 mL, 0.6 mmol), and the mixture is stirred at room temperature for 16 hours. The solvent is removed on a rotary evaporator and then the residue is purified by flash chromotography on silica gel to give the pure title compound. The solvent is removed on a rotary evaporator the residue is purified by flash chromotography on silica gel