(2R)-2-amino-3-(4-fluorophenyl)propan-1-ol

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

Procedure: The similar procedure as described in example 1b was used, starting from 2-methylsulfanyl-5-[1-quinolin-6-yl-meth-(Z)-ylidene]-thiazol-4-one, (R)-2-(4-fluoro-phenyl)-1-hydroxymethyl-ethylamine and DIEA to give 2-[(R)-2-(4-fluoro-phenyl)-1-hydroxymethyl-ethylamino]-5-[1-quinolin-6-yl-meth-(Z)-ylidene]-thiazol-4-one. LC-MS m/e 408 (MH+).

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To the solution of sodium borohydride (0.48 g, 13.1 mmol) in THF (10 mL) was added D-4-fluorophenylalanine (1.0 g, 5.5 mmol). After cooling to 0° C., the solution of iodine (1.4 g, 5.5 mmol) in THF (10 mL) was added dropwisely. The mixture was stirred at reflux for 18 h. after cooling to the room temperature, methanol (7 mL) was added to stop the reaction. After removal of solvent, 20% potassium hydroxide (50 mL) was added. The mixture was stirred for 4 h and extracted with methylene chloride (3×50 mL). The combined organic layers were dried over sodium sulfate, filtered, and concentrated in vacuo. Flash chromatography (Merck Silica gel 60, 70-230 mesh, 0%-10% methanol in methylene chloride in 30 min afforded (R)-2-(4-fluoro-phenyl)-1-hydroxymethyl-ethylamine (0.73 g, 79%). at reflux for 18 h. was added the reaction After removal of solvent, 20% potassium hydroxide (50 mL) was added The mixture was stirred for 4 h extracted with methylene chloride (3×50 mL) The combined organic layers were dried over sodium sulfate filtered concentrated in vacuo