2-amino-alpha-methylbenzyl alcohol

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

Procedure: The title compound was prepared in analogy to Example 4, intermediate, from 2-[2-(4-chloro-phenyl)-5,6-difluoro-benzoimidazol-1-yl]-2-cyclohexyl-ethanol (Ex. 1, int. c), (4-hydroxy-phenoxy)-acetic acid methyl ester (commercially available), tri-n-butylphosphin and N,N′,N′-tetramethylazodicarboxamide. The compound was purified by preparative HPLC (phenomenex gemini column) eluting with a gradient of acetonitril:water (50:50 to 95:5). Colorless oil. MS (Turbo Spray): m/z=555.2 [M+H]. The compound was purified by preparative HPLC (phenomenex gemini column) eluting with a gradient of acetonitril:water (50:50 to 95:5)

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

Procedure: A suspension of the ethyl[(1S)-5-hydroxy-2,3-dihydro-1H-inden-1-yl]acetate prepared in Example 135 (507.5 mg, 2.30 mmol), and 2-[5-methyl-2-(4-methylphenyl)-1,3-oxazol-4-yl]ethanol prepared in Example 10 (500 mg, 2.30 mmol), TMAD (792.6 mg, 4.60 mmol), and Ph3P (1.21 g, 4.60 mmol) in 15 mL anhydrous DCM was stirred at rt under Ar for 12 hours. DCM was removed under reduced pressure. Flash chromatograph of the residue over silica gel using 1% CH3CN/CH2Cl2 gave ethyl 2-((1S)-5-{2-[5-methyl-2-(4-methylphenyl)(1,3-oxazol-4-yl)]ethoxy}indanyl)acetate (776.3 mg, 1.85 mmol, 80.5%). HPLC/MS (M+H)+ m/z 420.5. DCM was removed under reduced pressure

Conditions: temp:65.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: TMAD (0.55 g, 3.20 mmol) was added to a stirred solution of 2-[3-(4-tert-butoxycarbonyl-1-piperazinyl)-2-pyrazinyloxy]ethanol (1.00 g, 3.08 mmol; prepared in Example 52, Step 2), 5-hydroxyquinoxaline* (0.45 g, 3.08 mmol) and PPh3 (0.85 g, 3.24 mmol) in THF (20 mL). The reaction was stirred at room temperature for 1.5 h and at 65° C. for 2 h. The reaction mixture was concentrated and the residue was purified by column chromatography on silica using toluene/EtOAc (1:1) as eluent. The resulting solid was crystallized twice from diethyl ether/petroleum ether to remove PPh3O. The recrystallized material (0.50 g) was dissolved in MeOH (15 mL) and 1 M HCl (3.5 mL) was added. The resulting mixture was stirred at room temperature for 4 h (only 10% N-Boc-deprotection had occurred according to HPLC/MS). The mixture was concentrated and the residue was treated with CH2Cl2/TFA/H2O (50:45:5; 20 mL) for 1 h. After concentration in vacuo, the residue was dissolved in 0.1 M aqueous HCl and washed with toluene. The water phase was lyophilized to give a yellow oil that was dissolved in 1 M HCl. The solution was concentrated and MeOH and diethyl ether was added. The precipitate formed was collected and dried in vacuum to give 0.32 g (76%) of the title product. Pos-EI-MS shows M+ and 8 ions supporting the stated structure. HRMS m/z calcd for C18H20N6O2 (M)+ 352.1648, found 352.1662. The reaction mixture was concentrated the residue was purified by column chromatography on silica The resulting solid was crystallized twice from diethyl ether/petroleum ether to remove PPh3O The recrystallized material (0.50 g) was dissolved in MeOH (15 mL) 1 M HCl (3.5 mL) was added The resulting mixture was stirred at room temperature for 4 h (only 10% N-Boc-deprotection The mixture was concentrated the residue was treated with CH2Cl2/TFA/H2O (50:45:5; 20 mL) for 1 h After concentration in vacuo the residue was dissolved in 0.1 M aqueous HCl washed with toluene to give a yellow oil that The solution was concentrated MeOH and diethyl ether was added The precipitate formed was collected dried in vacuum

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

Procedure: The title compound was prepared according to the procedure of Example 77 starting from 2,6-difluorophenol (239 mg, 1.84 mmol), TMAD (384 mg, 2.25 mmol), 2-[3-(4-tert-butoxycarbonyl-1-piperazinyl)-2-pyrazinyloxy]ethanol (600 mg, 1.86 mmol; prepared in Example 52, Step 2), and triphenylphosphine (969 mg, 3.69 mmol) to give 279 mg (45%) of a solid: mp 101-102° C. HRMS m/z calcd for C16H18F2N4O2 (M)+ 336.1398, found 336.1403.

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

Procedure: The title compound was prepared according to the procedure of Example 77 starting from 2,6-difluorophenol (239 mg, 1.84 mmol), TMAD (384 mg, 2.25 mmol), 2-[3-(4-tert-butoxycarbonyl-1-piperazinyl)-2-pyrazinyloxy]ethanol (600 mg, 1.86 mmol; prepared in Example 52, Step 2), and triphenylphosphine (969 mg, 3.69 mmol) to give 279 mg (45%) of a solid: mp 101-102° C. HRMS m/z calcd for C16H18F2N4O2 (M)+ 336.1398, found 336.1403.

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

Procedure: A suspension of the ethyl[(1S)-5-hydroxy-2,3-dihydro-1H-inden-1-yl]acetate prepared in Example 135 (507.5 mg, 2.30 mmol), and 2-[5-methyl-2-(4-methylphenyl)-1,3-oxazol-4-yl]ethanol prepared in Example 10 (500 mg, 2.30 mmol), TMAD (792.6 mg, 4.60 mmol), and Ph3P (1.21 g, 4.60 mmol) in 15 mL anhydrous DCM was stirred at rt under Ar for 12 hours. DCM was removed under reduced pressure. Flash chromatograph of the residue over silica gel using 1% CH3CN/CH2Cl2 gave ethyl 2-((1S)-5-{2-[5-methyl-2-(4-methylphenyl)(1,3-oxazol-4-yl)]ethoxy}indanyl)acetate (776.3 mg, 1.85 mmol, 80.5%). HPLC/MS (M+H)+ m/z 420.5. DCM was removed under reduced pressure

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

Procedure: To a mixture of 2-(5-hydroxy-1H-pyrazol-1-yl)pyridine-4-carbonitrile (185 mg, 0.99 mmol), 4-fluorobenzyl alcohol (188 mg, 1.49 mol), PPh3 (391 mg, 1.49 mmol) and THF (4 mL) cooled in an ice-water bath, TMAD (257 mg, 1.49 mmol) was added. The reaction mixture was stirred overnight at rt, filtered, and concentrated before purification by prep-HPLC to give the title compound (40 mg, 13%). 1H NMR (400 MHz, CDCl3): δ 5.14 (2H, s), 5.68 (1H, s), 7.00-7.05 (2H, m), 7.33-7.36 (3H, m), 7.52 (1H, s), 7.96 (1H, s), 8.64 (1H, s). [M+H] Calc'd for C16H11FN4O, 295; Found, 295. cooled in an ice-water bath filtered concentrated before purification by prep-HPLC

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

Procedure: Tributyl phosphine (137 mg, 0.68 mmol) and TMAD (122 mg, 0.68 mmol) were added successively to a dry benzene (10 mL) solution of 2-indanol (92 mg, 0.68 mmol) and ethyl 2-(6-hydroxy-1,2,3,4-tetrahydronaphthalen-1-yl)acetate 52.5 (160 mg, 0.68 mmol) with stirring under a nitrogen atmosphere. The reaction mixture was stirred at room temperature for 2 days. The product was isolated by silica gel column chromatography after filtration and evaporation of the solvent in vacuo. (R/S)-Ethyl 2-(6-(2,3-dihydro-1H-inden-2-yloxy)-1,2,3,4-tetrahydronaphthalen-1-yl)acetate (52) was obtained as a colorless oil (85 mg, 35%). LC-MS ESI (pos.) m/e: 351 (M+H). The reaction mixture was stirred at room temperature for 2 days The product was isolated by silica gel column chromatography after filtration and evaporation of the solvent in vacuo

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

Procedure: In a nitrogen stream, 2-(4-cyclopropylbenzyl)phenol and tributylphosphine (70 μL, 0.28 mmol) were added to a solution of (1S,4R,5S,6S)-4,5,6-tris(benzyloxy)-3-(benzyloxymethyl)cyclohex-2-enol (51 mg, 0.095 mmol) as described in a document [J. Org. Chem., 63, 5668-5671 (1998)] in toluene (300 μL) under cooling with ice, and then tetramethylazodicarboxamide (48 mg, 0.28 mmol) was added thereto at the same temperature. The reaction mixture was stirred at the same temperature for 20 hours and then hexane was added thereto and the precipitate was filtered and the solvent of the filtrate was distilled. The obtained residue was purified by preparative TLC [developing solution=ethyl acetate:n-hexane (1:5) to obtain the title compound (44 mg, 62%). under cooling with ice the precipitate was filtered the solvent of the filtrate was distilled The obtained residue was purified by preparative TLC [

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

Procedure: In a nitrogen stream, 2-(4-cyclopropylbenzyl)phenol and tributylphosphine (70 μL, 0.28 mmol) were added to a solution of (1S,4R,5S,6S)-4,5,6-tris(benzyloxy)-3-(benzyloxymethyl)cyclohex-2-enol (51 mg, 0.095 mmol) as described in a document [J. Org. Chem., 63, 5668-5671 (1998)] in toluene (300 μL) under cooling with ice, and then tetramethylazodicarboxamide (48 mg, 0.28 mmol) was added thereto at the same temperature. The reaction mixture was stirred at the same temperature for 20 hours and then hexane was added thereto and the precipitate was filtered and the solvent of the filtrate was distilled. The obtained residue was purified by preparative TLC [developing solution=ethyl acetate:n-hexane (1:5) to obtain the title compound (44 mg, 62%). under cooling with ice the precipitate was filtered the solvent of the filtrate was distilled The obtained residue was purified by preparative TLC [

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

Procedure: To a mixture of 2-(5-hydroxy-1H-pyrazol-1-yl)pyridine-4-carbonitrile (185 mg, 0.99 mmol), 4-fluorobenzyl alcohol (188 mg, 1.49 mol), PPh3 (391 mg, 1.49 mmol) and THF (4 mL) cooled in an ice-water bath, TMAD (257 mg, 1.49 mmol) was added. The reaction mixture was stirred overnight at rt, filtered, and concentrated before purification by prep-HPLC to give the title compound (40 mg, 13%). 1H NMR (400 MHz, CDCl3): δ 5.14 (2H, s), 5.68 (1H, s), 7.00-7.05 (2H, m), 7.33-7.36 (3H, m), 7.52 (1H, s), 7.96 (1H, s), 8.64 (1H, s). [M+H] Calc'd for C16H11FN4O, 295. Found, 295. cooled in an ice-water bath filtered concentrated before purification by prep-HPLC

Conditions: temp:65.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: TMAD (0.55 g, 3.20 mmol) was added to a stirred solution of 2-[3-(4-tert-butoxycarbonyl-1-piperazinyl)-2-pyrazinyloxy]ethanol (1.00 g, 3.08 mmol; prepared in Example 52, Step 2), 5-hydroxyquinoxaline* (0.45 g, 3.08 mmol) and PPh3 (0.85 g, 3.24 mmol) in THF (20 mL). The reaction was stirred at room temperature for 1.5 h and at 65° C. for 2 h. The reaction mixture was concentrated and the residue was purified by column chromatography on silica using toluene/EtOAc (1:1) as eluent. The resulting solid was crystallized twice from diethyl ether/petroleum ether to remove PPh3O. The recrystallized material (0.50 g) was dissolved in MeOH (15 mL) and 1 M HCl (3.5 mL) was added. The resulting mixture was stirred at room temperature for 4 h (only 10% N-Boc-deprotection had occurred according to HPLC/MS). The mixture was concentrated and the residue was treated with CH2Cl2/TFA/H2O (50:45:5; 20 mL) for 1 h. After concentration in vacuo, the residue was dissolved in 0.1 M aqueous HCl and washed with toluene. The water phase was lyophilized to give a yellow oil that was dissolved in 1 M HCl. The solution was concentrated and MeOH and diethyl ether was added. The precipitate formed was collected and dried in vacuum to give 0.32 g (76%) of the title product. Pos-EI-MS shows M+ and 8 ions supporting the stated structure. HRMS m/z calcd for C18H20N6O2 (M)+ 352.1648, found 352.1662. The reaction mixture was concentrated the residue was purified by column chromatography on silica The resulting solid was crystallized twice from diethyl ether/petroleum ether to remove PPh3O The recrystallized material (0.50 g) was dissolved in MeOH (15 mL) 1 M HCl (3.5 mL) was added The resulting mixture was stirred at room temperature for 4 h (only 10% N-Boc-deprotection The mixture was concentrated the residue was treated with CH2Cl2/TFA/H2O (50:45:5; 20 mL) for 1 h After concentration in vacuo the residue was dissolved in 0.1 M aqueous HCl washed with toluene to give a yellow oil that The solution was concentrated MeOH and diethyl ether was added The precipitate formed was collected dried in vacuum