3-bromofuran-2-carbonyl chloride

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: The title compound was prepared from 3-amino-4-chloro-benzamidoxime (293 mg, 1.58 mmol) and 3-bromofuran-2-carbonyl chloride (329 mg, 1.57 mmol) in pyridine (2.8 mL) under reflux similar to Example 1b, yielded 289 mg (54%) as a white solid. 1H NMR (CDCl3): 7.66 (d, J=1.64 Hz, 1H), 7.59 (d, J=1.92 Hz, 1H), 7.50 (dd, J1=8.38 Hz, J2=2.07 Hz, 1H), 7.37 (d, J=8.24 Hz, 1H), 6.75 (d, J=1.93 Hz, 1H), 4.22 (s, 2H). under reflux similar to Example 1b yielded 289 mg (54%) as a white solid

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: The title compound was prepared from 3-amino-4-chloro-benzamidoxime (293 mg, 1.58 mmol) and 3-bromofuran-2-carbonyl chloride (329 mg, 1.57 mmol) in pyridine (2.8 mL) under reflux similar to Example 1b, yielded 289 mg (54%) as a white solid. 1H NMR (CDCl3): 7.66 (d, J=1.64 Hz, 1H), 7.59 (d, J=1.92 Hz, 1H), 7.50 (dd, J1=8.38 Hz, J2=2.07 Hz, 1H), 7.37 (d, J=8.24 Hz, 1H), 6.75 (d, J=1.93 Hz, 1H), 4.22 (s, 2H). under reflux similar to Example 1b yielded 289 mg (54%) as a white solid

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: The title compound was prepared from 3-amino-4-chloro-benzamidoxime (293 mg, 1.58 mmol) and 3-bromofuran-2-carbonyl chloride (329 mg, 1.57 mmol) in pyridine (2.8 mL) under reflux similar to Example 1b, yielded 289 mg (54%) as a white solid. 1H NMR (CDCl3): 7.66 (d, J=1.64 Hz, 1H), 7.59 (d, J=1.92 Hz, 1H), 7.50 (dd, J1=8.38 Hz, J2=2.07 Hz, 1H), 7.37 (d, J=8.24 Hz, 1H), 6.75 (d, J=1.93 Hz, 1H), 4.22 (s, 2H). under reflux similar to Example 1b yielded 289 mg (54%) as a white solid

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: The title compound was prepared from 3-amino-4-chloro-benzamidoxime (293 mg, 1.58 mmol) and 3-bromofuran-2-carbonyl chloride (329 mg, 1.57 mmol) in pyridine (2.8 mL) under reflux similar to Example 1b, yielded 289 mg (54%) as a white solid. 1H NMR (CDCl3): 7.66 (d, J=1.64 Hz, 1H), 7.59 (d, J=1.92 Hz, 1H), 7.50 (dd, J1=8.38 Hz, J2=2.07 Hz, 1H), 7.37 (d, J=8.24 Hz, 1H), 6.75 (d, J=1.93 Hz, 1H), 4.22 (s, 2H). under reflux similar to Example 1b yielded 289 mg (54%) as a white solid

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: The title compound was prepared from 3-amino-4-chloro-benzamidoxime (293 mg, 1.58 mmol) and 3-bromofuran-2-carbonyl chloride (329 mg, 1.57 mmol) in pyridine (2.8 mL) under reflux similar to Example 1b, yielded 289 mg (54%) as a white solid. 1H NMR (CDCl3): 7.66 (d, J=1.64 Hz, 1H), 7.59 (d, J=1.92 Hz, 1H), 7.50 (dd, J1=8.38 Hz, J2=2.07 Hz, 1H), 7.37 (d, J=8.24 Hz, 1H), 6.75 (d, J=1.93 Hz, 1H), 4.22 (s, 2H). under reflux similar to Example 1b yielded 289 mg (54%) as a white solid

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: The title compound was prepared from 4-chlorobenzamidoxime (479 mg, 2.29 mmol) and 3-bromo-furan-2-carbonyl chloride (390 mg, 2.29 mmol) similar to Example 16, and yielded 570 mg (81%) of white solid. 1H NMR (CDCl3): 8.13 (dd, J=8.80, 2.20 Hz, 2H), 7.67 (d, J=1.92 Hz, 1H), 7.49 (dd, J=8.79, 2.20 Hz, 2H), 6.75 (d, J=1.92 Hz, 1H).

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: The title compound was prepared from 5-trifluoromethyl-pyridine-2-amidoxime (480 mg, 2.34 mmol) and 3-bromo-furan-2-carbonyl chloride (490 mg, 2.34 mmol) similar to Example 16, and yielded 718 mg (85%) of light yellow solid. 1H NMR (CDCl3): 9.09 (m, 1H), 8.37 (d, J=8.24 Hz, 1H), 8.14 (dd, J=8.10, 2.34 Hz, 1H), 7.70 (d, J=1.92 Hz, 1H), 6.78 (d, J=1.92 Hz, 1H). yielded 718 mg (85%) of light yellow solid

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Compounds of this invention with Formulae I-IX may be prepared as illustrated by the exemplary reaction in Scheme 2. Reaction of 3-bromo-furan-2-carboxylic acid with thionyl chloride produces intermediate, 3-bromo-furan-2-carbonyl chloride, followed by refluxing with 4-trifluoromethyl-benzamidoxime in pyridine produces the product 5-(3-bromo-furan)-3-(4-trifluoromethyl-phenyl)-[1,2,4]-oxadiazole. Compounds of this invention with Formulae I-IX may be prepared as illustrated by the exemplary reaction in Scheme 2

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: The title compound was prepared from 4-chlorobenzamidoxime (479 mg, 2.29 mmol) and 3-bromo-furan-2-carbonyl chloride (390 mg, 2.29 mmol) similar to Example 16, and yielded 570 mg (81%) of white solid. 1H NMR (CDCl3): 8.13 (dd, J=8.80, 2.20 Hz, 2H), 7.67 (d, J=1.92 Hz, 1H), 7.49 (dd, J=8.79, 2.20 Hz, 2H), 6.75 (d, J=1.92 Hz, 1H).

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: The title compound was prepared from 5-trifluoromethyl-pyridine-2-amidoxime (480 mg, 2.34 mmol) and 3-bromo-furan-2-carbonyl chloride (490 mg, 2.34 mmol) similar to Example 16, and yielded 718 mg (85%) of light yellow solid. 1H NMR (CDCl3): 9.09 (m, 1H), 8.37 (d, J=8.24 Hz, 1H), 8.14 (dd, J=8.10, 2.34 Hz, 1H), 7.70 (d, J=1.92 Hz, 1H), 6.78 (d, J=1.92 Hz, 1H). yielded 718 mg (85%) of light yellow solid