1-bromo-4-fluoro-2-(methoxymethoxymethyl)benzene

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: To a solution of 5b (73.2 g, 293 mmol) in dry THF (400 mL) was added n-butyllithium (1.6 M in hexanes; 200 mL) over 45 min at −78° C. under nitrogen atmosphere. Anion precipitated. After 5 min, (i-PrO)3B (76.0 mL, 330 mmol) was added over 10 min, and the mixture was allowed to warm to room temperature over 1.5 h. Water and 6 N HCl (55 mL) were added, and the solvent was removed under reduced pressure to about a half volume. The mixture was poured into ethyl acetate and water. The organic layer was washed with brine and dried over anhydrous Na2SO4. The solvent was removed under reduced pressure. To a solution of the residue in tetrahydrofuran (360 mL) was added 6 N HCl (90 mL), and the mixture was stirred at 30° C. overnight. The solvent was removed under reduced pressure to about a half volume. The mixture was poured into ethyl acetate and water. The organic layer was washed with brine and dried over anhydrous Na2SO4. The solvent was removed under reduced pressure, and the residue was treated with i-Pr2O/hexane to give 19b (26.9 g, 60%) as a white powder: mp 118-120° C.; 1H NMR (300 MHz, DMSO-d6) δ (ppm) 4.95 (s, 2H), 7.15 (m, 1H), 7.24 (dd, J=9.7, 1.8 Hz, 1H), 7.74 (dd, J=8.2, 6.2 Hz, 1H), 9.22 (s, 1H); ESI-MS m/z 151 (M−H)−; HPLC purity 97.8%; Anal (C7H6BFO2) C, H. Anion precipitated the solvent was removed under reduced pressure to about a half volume The mixture was poured into ethyl acetate and water The organic layer was washed with brine dried over anhydrous Na2SO4 The solvent was removed under reduced pressure To a solution of the residue in tetrahydrofuran (360 mL) was added 6 N HCl (90 mL) The solvent was removed under reduced pressure to about a half volume The mixture was poured into ethyl acetate and water The organic layer was washed with brine dried over anhydrous Na2SO4 The solvent was removed under reduced pressure the residue was treated with i-Pr2O/hexane

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

実験手順: This compound was made from 1-bromonaphthaldehyde in the same manner as compound 5b: 1H NMR (300 MHz, CDCl3) δ (ppm) 3.42 (s, 3H), 4.75 (s, 2H), 4.81 (s, 2H), 7.5-7.7 (m, 3H), 7.99 (d, J=7.7 Hz, 2H), 8.22 (d, J=7.7 Hz, 1H).

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

実験手順: This compound was made from 2-bromo-5-trifluoromethylbenzaldehyde in the same manner as compound 5b and used for the next step without purification. used for the next step without purification

反応条件: temp:-78.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Compound 5b (2.0 g, 8.0 mmol) in THF (30 mL) was cooled to −78° C. and tert-butyllithium (9.9 mL, 16.8 mmol) as 1.7 M solution in pentane was added slowly. After stirring at −78° C. for 30 min, dibutyl ester of vinyl boronic acid was added dropwise. The mixture was stirred at −78° C. for 1 h, then was warmed up to room temperature and stirred overnight. Concentrated HCl (4 mL) was added and was stirred at room temperature for 4 h. Water (10 mL) was added and THF was removed under reduced pressure. The residue was extracted with ethyl ether, washed with brine, dried over magnesium sulfate, and concentrated under reduced pressure. The crude product was purified by flash column chromatography (9:1 hexane/ethyl acetate) to give 11 (383 mg, 30%) as a yellowish oil; 1H NMR (300 MHz, DMSO-d6) δ (ppm) 5.27 (s, 2H), 6.25 (t, J=8.5 Hz, 1H), 6.50 (d, J=9.4 Hz, 2H), 7.06-7.15 (m, 2H), 7.89 (dd, J=5.6, 7.9 Hz, 1H); ESI-MS m/z (M+H)+; HPLC purity: 98.7%; Anal. (C9H8BFO 0.1H2O)C, H. The mixture was stirred at −78° C. for 1 h was warmed up to room temperature stirred overnight was stirred at room temperature for 4 h THF was removed under reduced pressure The residue was extracted with ethyl ether washed with brine dried over magnesium sulfate concentrated under reduced pressure The crude product was purified by flash column chromatography (9:1 hexane/ethyl acetate)

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

実験手順: This compound was made from 2-bromobenzylalcohol in the same manner as compound 5b and used for the next step without purification. used for the next step without purification

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

実験手順: Additional examples of compounds which can be produced by this method include 2-bromo-1-(methoxymethoxymethyl)benzene; 2-bromo-5-methyl-1-(methoxymethoxymethyl)benzene; 2-bromo-5-(methoxymethoxymethyl)-1-(methoxymethoxymethyl)benzene; 2-bromo-5-fluoro-1-(methoxymethoxymethyl)benzene; 1-bromo-2-(methoxymethoxymethyl)naphthalene; 2-bromo-4-fluoro-1-(methoxymethoxymethyl)benzene; 2-phenyl-1-(2-bromophenyl)-1-(methoxymethoxy)ethane; 2-bromo-5-(4-cyanophenoxy)-1-(methoxymethoxy methyl)benzene; 2-bromo-4-(3-cyanophenoxy)-1-(methoxymethoxymethyl)benzene; 2-bromo-4-(4-chlorophenoxy)-1-(methoxymethoxymethyl)benzene; 2-bromo-4-phenoxy-1-(methoxymethoxymethyl)benzene; 2-bromo-5-(3,4-dicyanophenoxy)-1-(methoxymethoxymethyl)benzene.

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: Additional examples of compounds which can be produced by this method include 2-bromo-1-(methoxymethoxymethyl)benzene; 2-bromo-5-methyl-1-(methoxymethoxymethyl)benzene; 2-bromo-5-(methoxymethoxymethyl)-1-(methoxymethoxymethyl)benzene; 2-bromo-5-fluoro-1-(methoxymethoxymethyl)benzene; 1-bromo-2-(methoxymethoxymethyl)naphthalene; 2-bromo-4-fluoro-1-(methoxymethoxymethyl)benzene; 2-phenyl-1-(2-bromophenyl)-1-(methoxymethoxy)ethane; 2-bromo-5-(4-cyanophenoxy)-1-(methoxymethoxy methyl)benzene; 2-bromo-4-(3-cyanophenoxy)-1-(methoxymethoxymethyl)benzene; 2-bromo-4-(4-chlorophenoxy)-1-(methoxymethoxymethyl)benzene; 2-bromo-4-phenoxy-1-(methoxymethoxymethyl)benzene; 2-bromo-5-(3,4-dicyanophenoxy)-1-(methoxymethoxymethyl)benzene.

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

実験手順: Additional examples of compounds which can be produced by this method include 2-bromo-1-(methoxymethoxymethyl)benzene; 2-bromo-5-methyl-1-(methoxymethoxymethyl)benzene; 2-bromo-5-(methoxymethoxymethyl)-1-(methoxymethoxymethyl)benzene; 2-bromo-5-fluoro-1-(methoxymethoxymethyl)benzene; 1-bromo-2-(methoxymethoxymethyl)naphthalene; 2-bromo-4-fluoro-1-(methoxymethoxymethyl)benzene; 2-phenyl-1-(2-bromophenyl)-1-(methoxymethoxy)ethane; 2-bromo-5-(4-cyanophenoxy)-1-(methoxymethoxy methyl)benzene; 2-bromo-4-(3-cyanophenoxy)-1-(methoxymethoxymethyl)benzene; 2-bromo-4-(4-chlorophenoxy)-1-(methoxymethoxymethyl)benzene; 2-bromo-4-phenoxy-1-(methoxymethoxymethyl)benzene; 2-bromo-5-(3,4-dicyanophenoxy)-1-(methoxymethoxymethyl)benzene.

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

実験手順: Additional examples of compounds which can be produced by this method include 2-bromo-1-(methoxymethoxymethyl)benzene; 2-bromo-5-methyl-1-(methoxymethoxymethyl)benzene; 2-bromo-5-(methoxymethoxymethyl)-1-(methoxymethoxymethyl)benzene; 2-bromo-5-fluoro-1-(methoxymethoxymethyl)benzene; 1-bromo-2-(methoxymethoxymethyl)naphthalene; 2-bromo-4-fluoro-1-(methoxymethoxymethyl)benzene; 2-phenyl-1-(2-bromophenyl)-1-(methoxymethoxy)ethane; 2-bromo-5-(4-cyanophenoxy)-1-(methoxymethoxy methyl)benzene; 2-bromo-4-(3-cyanophenoxy)-1-(methoxymethoxymethyl)benzene; 2-bromo-4-(4-chlorophenoxy)-1-(methoxymethoxymethyl)benzene; 2-bromo-4-phenoxy-1-(methoxymethoxymethyl)benzene; 2-bromo-5-(3,4-dicyanophenoxy)-1-(methoxymethoxymethyl)benzene.