azetidin-3-ylmethanol

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

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

Procedure: The title compound was prepared in an analogous fashion to that described in Stage 128.1 using 5-bromo-6-chloro-N-(4-(trifluoromethoxy)phenyl)nicotinamide (Stage 12.2) and azetidin-3-yl-methanol. HPLC (Condition 4) tR=5.33 min, UPLC-MS (Condition 3) tR=1.06 min, m/z=446.2.

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

Procedure: Dissolve azetidine-1,3-dicarboxylic acid mono-tert-butyl ester (300 mg, 1.50 mmol.) in THF (5.0 mL) and treat with lithium aluminum hydride (1.0M in ether, 3.0 mL, 3.0 mmol). Stir for 18 hours, quench with 3.0 mL of 1.0M NaOH, dilute with ether, filter through celite and evaporate. Treat the resulting 3-hydroxymethyl-azetidine-1-carboxylic acid tert-butyl ester with 10 mL of trifluoroacetic acid for 20 minutes an evaporate. Use this material without further purification. Combine 4-(3-Phenyl-indole-1-sulfonyl)-benzoic acid (100 mg, 0.26 mmol) and the resulting azetidin-3-yl-methanol in dichloromethane (1.0 mL) and triethylamine (0.100 mL, 0.717 mmol, excess) and add benzotriazol-1-yloxytris(dimethylamino)phosphonium hexfluorophosphate (BOP Reagent) (150 mg, 0.33 mmol, excess) at room temperature. Stir for 30 minutes, evaporate and load entire reaction directly onto pre-packed silica gel column and purify by flash column chromatography (EtOAc/Hexanes) to give 41 mg of (3-Hydroxymethyl-azetidin-1-yl)-[4-(3-phenyl-indole-1-sulfonyl)-phenyl]-methanone as a white solid (35%). LRMS: MH+ 447.2. quench with 3.0 mL of 1.0M NaOH dilute with ether filter through celite evaporate Treat the resulting 3-hydroxymethyl-azetidine-1-carboxylic acid tert-butyl ester with 10 mL of trifluoroacetic acid for 20 minutes an evaporate without further purification Stir for 30 minutes evaporate reaction directly onto pre-packed silica gel column purify by flash column chromatography (EtOAc/Hexanes)

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

Procedure: Under nitrogen atmosphere, 2-chloro-7-fluoro-5-methyl-6-phenyl-1,3-benzoxazole-4-cabonitrile (I-130) (240 mg, 0.84 mmol) was dissolved in methylene chloride (10 ml), then diisopropylethylamine (584 μl, 3.35 mmol) and 3-hydroxymethylazetidine (206 mg, 1.67 mmol) dissolved in methylene chloride (5 ml) were added, followed by heating under reflux in a sealed tube for 5 hours. After cooling, diluting with chloroform and washing with water, the organic layer was dried over anhydrous magnesium sulfate, then the solvent was evaporated away under reduced pressure. The resulting residue was subjected to preparative silica gel column chromatography. The eluate with chloroform/methanol (10:1, v/v) gave the entitled compound (208 mg, 74%) as a white solid. were added by heating under reflux in a sealed tube for 5 hours After cooling washing with water the organic layer was dried over anhydrous magnesium sulfate the solvent was evaporated away under reduced pressure

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

Procedure: Under nitrogen atmosphere, 2-chloro-7-fluoro-5-methyl-6-phenyl-1,3-benzoxazole-4-cabonitrile (I-130) (240 mg, 0.84 mmol) was dissolved in methylene chloride (10 ml), then diisopropylethylamine (584 μl, 3.35 mmol) and 3-hydroxymethylazetidine (206 mg, 1.67 mmol) dissolved in methylene chloride (5 ml) were added, followed by heating under reflux in a sealed tube for 5 hours. After cooling, diluting with chloroform and washing with water, the organic layer was dried over anhydrous magnesium sulfate, then the solvent was evaporated away under reduced pressure. The resulting residue was subjected to preparative silica gel column chromatography. The eluate with chloroform/methanol (10:1, v/v) gave the entitled compound (208 mg, 74%) as a white solid. were added by heating under reflux in a sealed tube for 5 hours After cooling washing with water the organic layer was dried over anhydrous magnesium sulfate the solvent was evaporated away under reduced pressure

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

Procedure: A stirred solution of 6-chloro-3-(trifluoromethyl)-[1,2,4]triazolo[4,3-b]pyridazine (4.44 g, 20.0 mmol), azetidin-3-ylmethanol (2.25 g, 22.0 mmol) and DIPEA (5.21 mL, 30.0 mmol) in DMF (40 mL) was heated at 70° C. for 1 hour. The solution was evaporated and partitioned between water and 2M aqueous K2CO3. The organic phase was washed with water and brine and dried over MgSO4. The crude product was purified by MPLC silica chromatography, eluting with 5% MeOH in DCM. Pure fractions were evaporated to dryness and triturated with ether, giving [1-[3-(trifluoromethyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]azetidin-3-yl]methanol (1.65 g, 30%) as a cream crystalline solid. The solution was evaporated partitioned between water and 2M aqueous K2CO3 The organic phase was washed with water and brine dried over MgSO4 The crude product was purified by MPLC silica chromatography eluting with 5% MeOH in DCM Pure fractions were evaporated to dryness triturated with ether

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

Procedure: Dissolve azetidine-1,3-dicarboxylic acid mono-tert-butyl ester (300 mg, 1.50 mmoL) in THF (5.0 mL) and treat with lithium aluminum hydride (1.0M in ether, 3.0 mL, 3.0 mmol). Stir for 18 hours, quench with 3.0 mL of 1.0M NaOH, dilute with ether, filter through celite and evaporate. Treat the resulting 3-hydroxymethyl-azetidine-1-carboxylic acid tert-butyl ester with 10 mL of trifluoroacetic acid for 20 minutes an evaporate. Use this material without further purification. Combine 4-(3-Phenyl-indole-1-sulfonyl)-benzoic acid (100 mg, 0.26 mmol) and the resulting azetidin-3-yl-methanol in dichloromethane (1.0 mL) and triethylamine (0.100 mL, 0.717 mmol, excess) and add benzotriazol-1-yloxytris(dimethylamino)phosphonium hexfluorophosphate (BOP Reagent) (150 mg, 0.33 mmol, excess) at room temperature. Stir for 30 minutes, evaporate and load entire reaction directly onto pre-packed silica gel column and purify by flash column chromatography (EtOAc/Hexanes) to give 41 mg of (3-Hydroxymethyl-azetidin-1-yl)-[4-(3-phenyl-indole-1-sulfonyl)-phenyl]-methanone as a white solid (35%). LRMS: MH+ 447.2. quench with 3.0 mL of 1.0M NaOH dilute with ether filter through celite evaporate Treat the resulting 3-hydroxymethyl-azetidine-1-carboxylic acid tert-butyl ester with 10 mL of trifluoroacetic acid for 20 minutes an evaporate without further purification Stir for 30 minutes evaporate reaction directly onto pre-packed silica gel column purify by flash column chromatography (EtOAc/Hexanes)

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

Procedure: The title compound was prepared in an analogous fashion to that described in Stage 128.1 using 5-bromo-6-chloro-N-(4-(trifluoromethoxy)phenyl)nicotinamide (Stage 12.2) and azetidin-3-yl-methanol. HPLC (Condition 4) tR=5.33 min, UPLC-MS (Condition 3) tR=1.06 min, m/z=446.2.

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

Procedure: Dissolve azetidine-1,3-dicarboxylic acid mono-tert-butyl ester (300 mg, 1.50 mmol.) in THF (5.0 mL) and treat with lithium aluminum hydride (1.0M in ether, 3.0 mL, 3.0 mmol). Stir for 18 hours, quench with 3.0 mL of 1.0M NaOH, dilute with ether, filter through celite and evaporate. Treat the resulting 3-hydroxymethyl-azetidine-1-carboxylic acid tert-butyl ester with 10 mL of trifluoroacetic acid for 20 minutes an evaporate. Use this material without further purification. Combine 4-(3-Phenyl-indole-1-sulfonyl)-benzoic acid (100 mg, 0.26 mmol) and the resulting azetidin-3-yl-methanol in dichloromethane (1.0 mL) and triethylamine (0.100 mL, 0.717 mmol, excess) and add benzotriazol-1-yloxytris(dimethylamino)phosphonium hexfluorophosphate (BOP Reagent) (150 mg, 0.33 mmol, excess) at room temperature. Stir for 30 minutes, evaporate and load entire reaction directly onto pre-packed silica gel column and purify by flash column chromatography (EtOAc/Hexanes) to give 41 mg of (3-Hydroxymethyl-azetidin-1-yl)-[4-(3-phenyl-indole-1-sulfonyl)-phenyl]-methanone as a white solid (35%). LRMS: MH+ 447.2. quench with 3.0 mL of 1.0M NaOH dilute with ether filter through celite evaporate Treat the resulting 3-hydroxymethyl-azetidine-1-carboxylic acid tert-butyl ester with 10 mL of trifluoroacetic acid for 20 minutes an evaporate without further purification Stir for 30 minutes evaporate reaction directly onto pre-packed silica gel column purify by flash column chromatography (EtOAc/Hexanes)

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

Procedure: Under nitrogen atmosphere, 2-chloro-7-fluoro-5-methyl-6-phenyl-1,3-benzoxazole-4-cabonitrile (I-130) (240 mg, 0.84 mmol) was dissolved in methylene chloride (10 ml), then diisopropylethylamine (584 μl, 3.35 mmol) and 3-hydroxymethylazetidine (206 mg, 1.67 mmol) dissolved in methylene chloride (5 ml) were added, followed by heating under reflux in a sealed tube for 5 hours. After cooling, diluting with chloroform and washing with water, the organic layer was dried over anhydrous magnesium sulfate, then the solvent was evaporated away under reduced pressure. The resulting residue was subjected to preparative silica gel column chromatography. The eluate with chloroform/methanol (10:1, v/v) gave the entitled compound (208 mg, 74%) as a white solid. were added by heating under reflux in a sealed tube for 5 hours After cooling washing with water the organic layer was dried over anhydrous magnesium sulfate the solvent was evaporated away under reduced pressure