(2-acetamidophenyl)boronic acid

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

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

Procedure: 2-acetylaminophenyl boronic acid (0.124 g, 0.693 mmol) and 3-bromoaniline (0.05 mL, 0.462 mmol) were combined in DME (2 mL) in a flame-dried, round-bottom flask. Na2CO3 (2M, 0.485 mL, 0.970 mmol) and Pd(PPh3)4 (0.017 g, 0.014 mmol) were added to the stirred solution. The reaction was refluxed overnight under argon flow, and subsequently cooled to room temperature. The solvent was removed under vacuum and the resulting residue was resuspended in H20 and extracted with CH2Cl2. The organic phase was dried over MgSO4 and concentrated under vacuum. The crude product was purified by silica column chromatography (0-50% EtOAc/hexanes). The purification was monitored by TLC. The solvent was removed under vacuum from fractions containing product, resulting in 0.103 g in 98% yield. The reaction was refluxed overnight under argon flow The solvent was removed under vacuum extracted with CH2Cl2 The organic phase was dried over MgSO4 concentrated under vacuum The crude product was purified by silica column chromatography (0-50% EtOAc/hexanes) The purification The solvent was removed under vacuum from fractions containing product resulting in 0.103 g in 98% yield

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

Procedure: 5-Iodo-2-aminobenzenesulfonamide (see compound 37) was transformed by Method H (using 2-Acetamidophenylboronic acid) and Method G (using cyclohexanecarboxaldehyde). M.p. 245-249° C.

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

Procedure: 5-Iodo-2-aminobenzenesulfonamide (see compound 37) was transformed by Method H (using 2-Acetamidophenylboronic acid) and Method G (using cyclohexanecarboxaldehyde). M.p. 245-249° C.

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

Procedure: A mixture of 2-aminophenylboronic acid (900 mg; 6.6 mmol), triethylamine (0.57 ml; 7 mmol) and acetylchloride (0.5 ml; 7 mmol) was stirred at rt. for 1 h. The reaction mixture was evaporated to dryness, stirred with H2O and filtered to give 750 mg (63%) product. The reaction mixture was evaporated to dryness stirred with H2O filtered

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

Procedure: A mixture of 2-aminophenylboronic acid (900 mg; 6.6 mmol), triethylamine (0.57 ml; 7 mmol) and acetylchloride (0.5 ml; 7 mmol) was stirred at rt. for 1 h. The reaction mixture was evaporated to dryness, stirred with H2O and filtered to give 750 mg (63%) product. The reaction mixture was evaporated to dryness stirred with H2O filtered

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

Procedure: 2-acetylaminophenyl boronic acid (0.124 g, 0.693 mmol) and 3-bromoaniline (0.05 mL, 0.462 mmol) were combined in DME (2 mL) in a flame-dried, round-bottom flask. Na2CO3 (2M, 0.485 mL, 0.970 mmol) and Pd(PPh3)4 (0.017 g, 0.014 mmol) were added to the stirred solution. The reaction was refluxed overnight under argon flow, and subsequently cooled to room temperature. The solvent was removed under vacuum and the resulting residue was resuspended in H20 and extracted with CH2Cl2. The organic phase was dried over MgSO4 and concentrated under vacuum. The crude product was purified by silica column chromatography (0-50% EtOAc/hexanes). The purification was monitored by TLC. The solvent was removed under vacuum from fractions containing product, resulting in 0.103 g in 98% yield. The reaction was refluxed overnight under argon flow The solvent was removed under vacuum extracted with CH2Cl2 The organic phase was dried over MgSO4 concentrated under vacuum The crude product was purified by silica column chromatography (0-50% EtOAc/hexanes) The purification The solvent was removed under vacuum from fractions containing product resulting in 0.103 g in 98% yield

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

Conditions: temp:150.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of 5-bromo-3-(5-phenyl-1,3,4-oxadiazol-2-yl)pyrazin-2-amine (100 mg, 0.31 mmol), 2-ethanamidophenylboronic acid (56.25 mg, 0.31 mmol), tetrakis(triphenylphosphine)palladium (18.17 mg, 0.015 mmol) and Na2CO3 (471 μL, 2M aqueous solution) were added to a 10 mL microwave vial. Dioxane (3 mL) was then added and the vial sealed. The reaction mixture was heated in the microwave at 150° C. for 30 min. After this time methanol was added and the reaction mixture filtered. The solid was then washed with water (5 mL) and MeOH (5 mL) and dried under vacuum to give the product (31.0 mg, 28% yield); 1H NMR (400.0 MHz, DMSO) d 2.04 (s, 3H), 7.26 (t, 1H), 7.44-7.40 (m, 1H), 7.69-7.67 (m, 4H), 7.80 (d, 2H), 8.15-8.13 (m, 3H), 8.73 (s, 1H) and 10.76 (s, 1H) ppm; MS (ES+) 373.0 the reaction mixture filtered The solid was then washed with water (5 mL) and MeOH (5 mL) dried under vacuum

Conditions: temp:150.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of 5-bromo-3-(5-phenyl-1,3,4-oxadiazol-2-yl)pyrazin-2-amine (100 mg, 0.31 mmol), 2-ethanamidophenylboronic acid (56.25 mg, 0.31 mmol), tetrakis(triphenylphosphine)palladium (18.17 mg, 0.015 mmol) and Na2CO3 (471 μL, 2M aqueous solution) were added to a 10 mL microwave vial. Dioxane (3 mL) was then added and the vial sealed. The reaction mixture was heated in the microwave at 150° C. for 30 min. After this time methanol was added and the reaction mixture filtered. The solid was then washed with water (5 mL) and MeOH (5 mL) and dried under vacuum to give the product (31.0 mg, 28% yield); 1H NMR (400.0 MHz, DMSO) d 2.04 (s, 3H), 7.26 (t, 1H), 7.44-7.40 (m, 1H), 7.69-7.67 (m, 4H), 7.80 (d, 2H), 8.15-8.13 (m, 3H), 8.73 (s, 1H) and 10.76 (s, 1H) ppm; MS (ES+) 373.0 the reaction mixture filtered The solid was then washed with water (5 mL) and MeOH (5 mL) dried under vacuum

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

Procedure: 3-Bromo-xanthen-9-one (0.25 g, 0.9 mmol), 2-acetamidophenylboronic acid (0.99 mmol), 1,1′-bis-(diphenylphosphino)ferrocene-palladium (II) dichloride (33 mg, 0.045 mmol), cesium carbonate (0.59 g, 1.8 mmol), dioxane (4 mL), and ethanol (2 mL) were microwaved in a 5-mL reaction vessel at 100° C. for 5 min. The reaction was filtered and concentrated. The residue was purified by reverse phase chromatography to afford N-[2-(9-Oxo-9H-xanthen-3-yl)-phenyl]-acetamide. The reaction was filtered concentrated The residue was purified by reverse phase chromatography

Conditions: temp:150.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of 5-bromo-3-(5-phenyl-1,3,4-oxadiazol-2-yl)pyrazin-2-amine (100 mg, 0.31 mmol), 2-ethanamidophenylboronic acid (56.25 mg, 0.31 mmol), tetrakis(triphenylphosphine)palladium (18.17 mg, 0.015 mmol) and Na2CO3 (471 μL, 2M aqueous solution) were added to a 10 mL microwave vial. Dioxane (3 mL) was then added and the vial sealed. The reaction mixture was heated in the microwave at 150° C. for 30 min. After this time methanol was added and the reaction mixture filtered. The solid was then washed with water (5 mL) and MeOH (5 mL) and dried under vacuum to give the product (31.0 mg, 28% yield); 1H NMR (400.0 MHz, DMSO) d 2.04 (s, 3H), 7.26 (t, 1H), 7.44-7.40 (m, 1H), 7.69-7.67 (m, 4H), 7.80 (d, 2H), 8.15-8.13 (m, 3H), 8.73 (s, 1H) and 10.76 (s, 1H) ppm; MS (ES+) 373.0 the reaction mixture filtered The solid was then washed with water (5 mL) and MeOH (5 mL) dried under vacuum