4-methylpentan-1-ol

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

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

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

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

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

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

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

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

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

Procedure: Following transesterification General Procedure AB above and using N-(3,4-dichlorophenyl)alanine methyl ester (from Example A9 above) and 4-methylpentanol (Aldrich), the title compound was prepared as an oil. The reaction was monitored by silica gel tlc (Rf=0.70 in 25% EtOAc/hexanes). Purification was by preparative plate chromatography (silica gel using 25% EtOAc/hexanes as the eluant). Purification

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

Procedure: The title compound was prepared according to the method of Example 178, starting with 2-(3,4-difluorophenyl)-4-tosyloxy-5-[4-(methylsulfonyl)phenyl]-3(2H)-pyridazinone in place of 2-(4-fluorophenyl)-4-tosyloxy-5-[4-(methylsulfonyl)phenyl]-3(2H)-pyridazinone and substituting 4-methyl-1-pentanol in place of 2-ethyl-1-hexanol (yield: 120 mg, 52%). mp 98-99° C. 1H NMR (300 MHz, DMSO-d6) δ 0.73 (d, J=7 Hz, 6H), 1.02 (m, 2H), 1.29 (m, 1H), 1.54 (m, 2H), 3.30 (s, 3H), 4.40 (t, J=7 Hz, 2H), 7.52 (m, 1H), 7.62 (m, 1H), 7.81 (m, 1H), 7.90 (d, J=9 Hz, 2H), 8.08 (d, J=9 Hz, 2H), 8.22 (s, 1H). MS (APCI+) m/z 463 (M+H)+; (APCI−) m/z 497 (M+Cl)−. Anal. calc. for C23H24F2N2O4S: C, 59.72; H, 5.23; N, 6.05. Found: C, 59.57; H, 5.28; N, 6.01.

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

Procedure: The title compound was prepared according to the method of Example 335, starting with 2-(4-fluorophenyl)-4-tosyloxy-5-[4-(methylsulfonyl)phenyl]-3(2H)-pyridazinone in place of 2-(3-chlorophenyl)-4-tosyloxy-5-[4-(methylsulfonyl)phenyl]-3(2H)-pyridazinone and substituting 4-methyl-1-pentanol in place of isobutanol (yield: 0.128 g, 85%). mp 123-125° C. 1H NMR (300 MHz, DMSO d6) δ 0.74 (d, J=6 Hz, 6H), 1.03 (m, 2H), 1.39 (m, 1H), 1.54 (m, 2H), 3.28 (s, 3H), 4.39 (t, J=6 Hz, 2H), 7.37 (m, 2H), 7.66 (m, 2H), 7.91 (m, 2H), 8.07 (m, 2H), 8.18 (s, 1H). MS (DCI/NH3) m/z 445 (M+H)+. Anal. calc. for C23H25FN2O4S: C, 62.14; H, 5.67; N, 6.30. Found: C, 62.28; H, 5.59; N, 6.25.

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

Procedure: Following transesterification General Procedure AB above and using N-(3,4-dichlorophenyl)alanine methyl ester (from Example A9 above) and 4-methylpentanol (Aldrich), the title compound was prepared as an oil. The reaction was monitored by silica gel tlc (Rf=0.70 in 25% EtOAc/hexanes). Purification was by preparative plate chromatography (silica gel using 25% EtOAc/hexanes as the eluant). Purification