methyl 2-(bromomethyl)furan-3-carboxylate

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

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: [5-(4-Fluoro-phenyl)-2-(2-triisopropylsilanyloxy-phenyl)-[1,3,4]thiadiazol-3-yl]-(2,4,6-trifluoro-phenyl)-methanone (0.67 mmol), prepared as described for [5-(4-fluoro-phenyl)-2-(3-methoxy-2-triisopropylsilanyloxy-phenyl)-[1,3,4]thiadiazol-3-yl]-(2,4,6-trifluoro-phenyl)-methanone in example 3, is treated with tetrabutylammonium fluoride (1.0 M in THF) (1.3 mmol) at room temperature. After 15 minutes, methyl 2-(bromomethyl)-3-furoate (0.74 mmol) is added and the mixture is stirred for an additional 12 hours. The solvent is removed in vacuo and the residue is purified on silica to yield 2-{2-[5(4-fluoro-phenyl)-3-(2,4,6-trifluoro-benzoyl)-2,3-dihydro-[1,3,4]thiadiazol-2-yl]-phenoxymethyl}-furan-3-carboxylic acid methyl ester as a yellow solid: LC/MS (ES+): 571.1 (M+1)+. The solvent is removed in vacuo the residue is purified on silica

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

実験手順: Alkylation of 3-bromo-5-ethoxy-4-hydroxy benzaldehyde (123 mg) with 2-bromomethyl-furan-3-carboxylic acid methyl ester (109 mg) was performed according to the method described in example 1a. Yield: 191 mg. MS-ESI: [M+H]+=383/385

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: 5-Ethyl-6-(3,5-dimethylphenoxy)-2,4-pyrimidinedione and 2-bromomethyl-3-methoxycarbonylfurane were reacted by the same way with the example 1 to obtain the titled compound (139 mg, yield: 36.4%).

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: [5-(4-Fluoro-phenyl)-2-(2-triisopropylsilanyloxy-phenyl)-[1,3,4]thiadiazol-3-yl]-(2,4,6-trifluoro-phenyl)-methanone (0.67 mmol), prepared as described for [5-(4-fluoro-phenyl)-2-(3-methoxy-2-triisopropylsilanyloxy-phenyl)-[1,3,4]thiadiazol-3-yl]-(2,4,6-trifluoro-phenyl)-methanone in example 3, is treated with tetrabutylammonium fluoride (1.0 M in THF) (1.3 mmol) at room temperature. After 15 minutes, methyl 2-(bromomethyl)-3-furoate (0.74 mmol) is added and the mixture is stirred for an additional 12 hours. The solvent is removed in vacuo and the residue is purified on silica to yield 2-{2-[5(4-fluoro-phenyl)-3-(2,4,6-trifluoro-benzoyl)-2,3-dihydro-[1,3,4]thiadiazol-2-yl]-phenoxymethyl}-furan-3-carboxylic acid methyl ester as a yellow solid: LC/MS (ES+): 571.1 (M+1)+. The solvent is removed in vacuo the residue is purified on silica

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

実験手順: 5-Isopropyl-6-(3,5-dimethylbenzoyl)-2,4-pyrimidinedione and 2-bromomethyl-3-methoxycarbonylfurane were reacted by the same way with the example 1 to obtain the titled compound (162 mg, yield: 39.7%).

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

実験手順: 5-Ethyl-6-(3,5-dimethylbenzoyl)-2,4-pyrimidinedione and 2-bromomethyl-3-methoxycarbonylfurane were reacted by the same way with the example 1 to obtain the titled compound (150 mg, yield: 38.0%).