2-tert-butyl-5-chloro-1,1-dioxo-1,2-thiazol-3-one

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

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

Procedure: This compound was prepared according to the procedure of Example 1.1, Step 4, using (S)-2-phenyl-1-carbamoyl-ethyl-carbamic acid tert-butyl ester and 9-A as the starting materials. LCMS found for C21H29N3O6SNa (M+Na)+: m/z=474. This compound was prepared

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

Procedure: This compound was prepared according to the procedure of Example 1.1, Step 4, using (S)-2-phenyl-1-carbamoyl-ethyl-carbamic acid tert-butyl ester and 9-A as the starting materials. LCMS found for C21H29N3O6SNa (M+Na)+: m/z=474. This compound was prepared

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

Procedure: (2-Fluoro-4-methylphenyl)boronic acid (19.5 g, 0.127 mol), 2-tert-butyl-5-chloro-1,1-dioxo-1,2-dihydro-1λ6-isothiazol-3-one (30.5 g, 0.136 mol) and [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II), complex with dichloromethane (1:1) (10.4 g, 12.7 mmol) were dissolved in toluene (500 mL) and treated with triethylamine (53.0 mL, 0.380 mol). The reaction was degassed and placed under an atmosphere of nitrogen. The reaction was then heated to 90° C. for 18 h. The reaction was diluted with ethyl acetate (500 mL) and washed with 1 N aqueous hydrochloric acid (500 mL). The ethyl acetate was dried over sodium sulfate, filtered and concentrated in vacuo. The crude material was filtered through celite and then silica gel. The crude material was then purified by silica gel chromatography (5–10% ethyl acetate:hexanes) to afford product as a white solid (24.5 g, 65%). 1H NMR (400 MHz, CDCl3): δ 7.85 (t, J=7.8 Hz, 1H), 7.11–7.03 (m2H), 6.86 (d, J=1.8 Hz, 1H), 2.42 (s, 3H), 1.73 (s, 9H). The reaction was degassed The reaction was diluted with ethyl acetate (500 mL) washed with 1 N aqueous hydrochloric acid (500 mL) The ethyl acetate was dried over sodium sulfate filtered concentrated in vacuo The crude material was filtered through celite The crude material was then purified by silica gel chromatography (5–10% ethyl acetate:hexanes)

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of benzyl(2S)-2-[(tert-butoxycarbonyl)amino]-3-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]propanoate (3.33 g, 6.92 mmol), 2-tert-Butyl-5-chloro-1,1-dioxo-1,2-dihydro-1λ6-isothiazol-3-one (1.86 g, 8.31 mmol), [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II), complex with dichloromethane (1:1) (0.68 g, 0.83 mmol), and potassium carbonate (4.78 g, 0.0346 mol) in 1,4-dioxane (25 mL) were added to a flask with a reflux condenser. The reaction atmosphere was evacuated and purged four times with dry nitrogen. The reaction was heated at 80° C. overnight. The reaction mixture was diluted with water and extracted with ethyl acetate. ethyl acetate extracts were washed with saturated brine and dried over anhyd. sodium sulfate, filtered and concentrated to an oil. The crude was eluted with 10%–30% ethyl acetate in hexanes to give the product (1.4 g, 37%). LCMS found for C28H35N2O7S (M+H)+: m/z=543. The reaction atmosphere was evacuated purged four times with dry nitrogen The reaction mixture was diluted with water extracted with ethyl acetate ethyl acetate extracts were washed with saturated brine dried over anhyd sodium sulfate, filtered concentrated to an oil The crude was eluted with 10%–30% ethyl acetate in hexanes

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

Procedure: This compound was prepared according to the procedure of Example 1.1, Step 4, using 4.26-B of Example 2 and 9-A of Example 1.9 as the starting materials. LCMS found for C40H37N4O3S (M+H)+: m/z=653. This compound was prepared

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of 4.12-A (100 mg, 0.2 mmol), 9-A (55 mg, 0.25 mmol), potassium carbonate (190 mg, 1.3 mmol) in 1,4-dioxane (1.5 mL) was added to a vial and degassed with nitrogen. Then [1,1′-Bis(diphenylphosphino)ferrocene]dichloropalladium(II), complex with dichloromethane (1:1) (28 mg, 0.034 mmol) was added, degassed with nitrogen and the vial capped and heated at 80° C. overnight. The reaction mixture was filtered through silica gel and eluted with copious amounts of EtOAc. The solvent was concentrated and crude sample purified by reverse phase HPLC to afford 20 mg (15%) of 4.12-B. LCMS found for C24H30N2O4S2 (M+H)+: m/z=475. degassed with nitrogen degassed with nitrogen the vial capped The reaction mixture was filtered through silica gel eluted with copious amounts of EtOAc The solvent was concentrated crude sample purified by reverse phase HPLC

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

Procedure: This compound was prepared according to the procedure of Example 1.1, Step 4, using 9-A and 4.11-C as the starting materials. 1H NMR (500 MHz, CDCl3): δ 7.56 (s, 1H), 7.36 (d, J=8.4 Hz, 2H), 6.96 (d, J=8.4 Hz, 2H), 6.46 (s, 1H), 4.75–4.65 (m, 1H), 4.58–4.50 (m, 1H), (m, 1H), 4.08–4.00 (m, 1H), 3.83 (s, 3H), 3.80–3.65 (m, 3H), 3.55–3.48 (m, 1H), 3.18–3.10 (m, 2H), 1.75 (s, 9H), 1.36 (s, 9H); LCMS found for C28H38N3O6S2 (M+H)+: m/z=576. This compound was prepared

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

Procedure: This compound was prepared according to the procedure of Example 1.1, Step 4, using 9-A and 4.11-C as the starting materials. 1H NMR (500 MHz, CDCl3): δ 7.56 (s, 1H), 7.36 (d, J=8.4 Hz, 2H), 6.96 (d, J=8.4 Hz, 2H), 6.46 (s, 1H), 4.75–4.65 (m, 1H), 4.58–4.50 (m, 1H), (m, 1H), 4.08–4.00 (m, 1H), 3.83 (s, 3H), 3.80–3.65 (m, 3H), 3.55–3.48 (m, 1H), 3.18–3.10 (m, 2H), 1.75 (s, 9H), 1.36 (s, 9H); LCMS found for C28H38N3O6S2 (M+H)+: m/z=576. This compound was prepared

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

Procedure: This compound was prepared according to the procedure of Example 1.1, Step 4, using 9-A and 3-(t-butyldimethylsilyoxy)phenylboronic acid as the starting materials. 1H NMR (500 MHz, CDCl3): δ 7.37–7.36 (m, 2H), 7.25–7.24 (m, 1H), 7.03–7.01 (m, 1H), 6.61 (s, 1H), 1.73 (s, 9H), 0.99 (s, 9H), 0.23 (s, 6H); LCMS found for C19H29NO4SSi (M+H)+: m/z=418. This compound was prepared

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

Procedure: This compound was prepared according to the procedure of Example 1.1, Step 4, using 9-A and 3-(t-butyldimethylsilyoxy)phenylboronic acid as the starting materials. 1H NMR (500 MHz, CDCl3): δ 7.37–7.36 (m, 2H), 7.25–7.24 (m, 1H), 7.03–7.01 (m, 1H), 6.61 (s, 1H), 1.73 (s, 9H), 0.99 (s, 9H), 0.23 (s, 6H); LCMS found for C19H29NO4SSi (M+H)+: m/z=418. This compound was prepared

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

Procedure: Combined 34-A (6.1 g, 61 mmol), 9-A (3.55 g, 15.9 mmol), potassium carbonate (10.0 g, 72.4 mmol), [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II), complex with dichloromethane (1:1) (2.50 g, 3.06 mmol) in 200 mL dioxane. The reaction was degassed and heated at 90° C. for 48 hours. The crude was extracted with ethyl acetate, washed with water and brine. The combined organic extracts were dried over Na2SO4, filtered and evaporated to give 11.4 g of a dark glass. The crude was chromatographed on a silica column to afford a dark semi-solid (3.3 g, 90%). 1H NMR (500 MHz, CDCl3): δ 7.72 (d, J=8.8 Hz, 2H), 7.38 (d, J=8.8 Hz, 2H), 6.62 (s, 1H), 4.77 (br s, 1H), 3.89 (br s, 1H), 3.69 (m, 1H), 3.58 (m, 1H), 2.93 (d, J=7.2 Hz, 2H) 1.43 (s, 9H), 1.39 (s, 9H). The reaction was degassed The crude was extracted with ethyl acetate washed with water and brine The combined organic extracts were dried over Na2SO4 filtered evaporated