1-methyl-2-phenylbenzene

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:25.01; 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: 2-Bromobenzene (80 mg, 0.51 mmol) reacted with 2-methylphenylboronic acid (90 mg, 0.66 mmol) using 1.0 mol % of Pd(dba)2/Ph5FcP(t-Bu)2 and KF (87 mg, 1.55 mmol) in THF solvent at room temperature to give the title compound (80 mg, 95%) as a colorless oil: 1H-NMR (400 MHz, CDCl3): δ 7.51-7.47 (m, 2H), 7.44-7.40 (m, 3H), 7.36-7.32 (m, 4H), 2.36 (s, 3H). 13C{1H}-NMR (100 MHz, CDCl3): δ 141.91, 141.89, 135.30, 130.27, 129.76, 129.16, 128.03, 127.22, 126.72, 125.73, 20.46. GC/MS(EI): m/z 168 (M+), 153. at room temperature

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: Under a nitrogen atmosphere, 101.3 g (0.50 mole) of 3-chloro-2-methylbiphenyl (92% purity) in 75 g of dry tetrahydrofuran was added dropwise over two hours with stirring to a gently refluxing mixture of 13.1 g (0.54 mole) of fresh magnesium turnings, the heel from a previous run containing 0.21 mole of unreacted magnesium, and 75 g of dry tetrahydrofuran in a dry reaction vessel. Upon complete addition, the reaction mixture was heated at reflux for five additional hours. Gas chromatographic analysis of a quenched sample of the reaction mixture showed 1.2% of unreacted 3-chloro-2-methylbiphenyl and 92.4% of 2-methylbiphenyl. The reaction mixture was allowed to cool overnight. a gently refluxing in a dry reaction vessel Upon complete addition the reaction mixture was heated at reflux for five additional hours to cool overnight

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

実験手順: 2-Bromobenzene (80 mg, 0.51 mmol) reacted with 2-methylphenylboronic acid (90 mg, 0.66 mmol) using 1.0 mol % of Pd(dba)2/Ph5FcP(t-Bu)2 and KF (87 mg, 1.55 mmol) in THF solvent at room temperature to give the title compound (80 mg, 95%) as a colorless oil: 1H-NMR (400 MHz, CDCl3): δ 7.51-7.47 (m, 2H), 7.44-7.40 (m, 3H), 7.36-7.32 (m, 4H), 2.36 (s, 3H). 13C{1H}-NMR (100 MHz, CDCl3): δ 141.91, 141.89, 135.30, 130.27, 129.76, 129.16, 128.03, 127.22, 126.72, 125.73, 20.46. GC/MS(EI): m/z 168 (M+), 153. at room temperature

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

実験手順: 2-Bromobenzene (80 mg, 0.51 mmol) reacted with 2-methylphenylboronic acid (90 mg, 0.66 mmol) using 1.0 mol % of Pd(dba)2/Ph5FcP(t-Bu)2 and KF (87 mg, 1.55 mmol) in THF solvent at room temperature to give the title compound (80 mg, 95%) as a colorless oil: 1H-NMR (400 MHz, CDCl3): δ 7.51-7.47 (m, 2H), 7.44-7.40 (m, 3H), 7.36-7.32 (m, 4H), 2.36 (s, 3H). 13C{1H}-NMR (100 MHz, CDCl3): δ 141.91, 141.89, 135.30, 130.27, 129.76, 129.16, 128.03, 127.22, 126.72, 125.73, 20.46. GC/MS(EI): m/z 168 (M+), 153. at room temperature

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

実験手順: In the drybox, 54.0 mg (0.303 mm) of (Me3C)2PH(S) (from Experiment 18), 83.4 mg (0.303 mm) of Ni(COD)2 and 10.0 mL of THF were loaded into a reactor (20 mL) equipped with a magnetic stir bar. The resulting mixture was stirred at room temperatureover a period of 10 min. After addition of 1.126 g (10.0 mm) of chlorobenzene, the resulting mixture was stirred for 5 min until the catalytic reaction was initiated by dropwise addition of 15 mL (15.0 mm, 1.0 M in THF) of o-tolylmagnesium chloride at room temperature over a period of 5 min. The resulting mixture was stirred at room temperature over 12 h before the reaction was quenched with 10.0 mL of H2O, and the mixture was diluted with 300 mL of Et2O. After separation of organic and aqueous phases, the organic phase was washed with 2×100 mL of H2O, and 100 mL of brine, then dried over mgSO4, filtered and concentrated by rotary evaporation. The crude product was purified by column chromatography on silica gel (100:1-hexane:methyl t-butyl ether) to afford 0.96 g (57% yield) of 2-phenyltoluene. (20 mL) equipped with a magnetic stir bar the resulting mixture was stirred for 5 min until the catalytic reaction The resulting mixture was stirred at room temperature over 12 h before the reaction was quenched with 10.0 mL of H2O the mixture was diluted with 300 mL of Et2O After separation of organic and aqueous phases the organic phase was washed with 2×100 mL of H2O, and 100 mL of brine dried over mgSO4 filtered concentrated by rotary evaporation The crude product was purified by column chromatography on silica gel (100:1-hexane:methyl t-butyl ether)

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

実験手順: The general procedure from Example 13 was followed using chlorobenzene (1.126 g, 10.0 mmol) and o-tolylmagnesium chloride (15 mL, 15.0 mmol) with Ni(COD)2 (83.4 mg, 0.303 mmol) and (Me3C)2PH(O) (50.0 mg, 0.303 mmol) in 20.0 mL of THF. After 15 h at room temperature, the reaction mixture was quenched with 10 mL of H2O. The mixture above was extracted with 3×50 mL of diethyl ether. The combined ether extracts were dried over mgSO4, filtered, and the ether and THF removed from the filtrate by rotary evaporation. The resulting residues were chromatographed on silicon gel using ethyl acetate/hexane (5% volume ratio) as eluant. The eluate was concentrated by rotary evaporation followed by high vacuum to yield 1.62 g (96% yield) of 2-phenyltoluene. It was >95% pure by 1H NMR. 1H NMR (500 MHz, CDCl3): δ7.62-7.47 (m, 9H), 2.50 (s, 3H) ppm. 13C NMR (125 MHz, CDCl3): δ142.0, 141.9, 135.2, 130.3, 129.7, 129.1, 128.0, 127.2, 126.7, 125.7, 20.4. ppm. the reaction mixture was quenched with 10 mL of H2O The mixture above was extracted with 3×50 mL of diethyl ether The combined ether extracts were dried over mgSO4 filtered the ether and THF removed from the filtrate by rotary evaporation The resulting residues were chromatographed on silicon gel The eluate was concentrated by rotary evaporation

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

実験手順: The general procedure from Example 16 was followed using chlorobenzene (1.126 g, 10.0 mmol) and o-tolylmagnesium chloride (15 mL, 15.0 mmol) with Ni(COD)2 (83.4 mg, 0.303 mmol) and (Me3C)2PH(O) (50.0 mg, 0.303 mmol) in 20.0 mL of THF. After 15 h at room temperature, the reaction mixture was quenched with 10 mL of H2O. The mixture above was extracted with 3×50 mL of diethyl ether. The combined ether extracts were dried over MgSO4, filtered, and the ether and THF removed from the filtrate by rotary evaporation. The resulting residues were chromatographed on silicon gel using ethyl acetate/hexane (5% volume ratio) as eluant. The eluate was concentrated by rotary evaporation followed by high vacuum to yield 1.62 g (96% yield) of 2-phenyltoluene. It was >95% pure by 1H NMR. 1H NMR (500 MHz, CDCl3): δ 7.62-7.47 (m, 9H), 2.50 (s, 3H) ppm. 13C NMR (125 MHz, CDCl3): δ 142.0, 141.9, 135.2, 130.3, 129.7, 129.1, 128.0, 127.2, 126.7, 125.7, 20.4. ppm. the reaction mixture was quenched with 10 mL of H2O The mixture above was extracted with 3×50 mL of diethyl ether The combined ether extracts were dried over MgSO4 filtered the ether and THF removed from the filtrate by rotary evaporation The resulting residues were chromatographed on silicon gel The eluate was concentrated by rotary evaporation

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

実験手順: Under a nitrogen atmosphere, 101.3 g (0.50 mole) of 3-chloro-2-methylbiphenyl (92% purity) in 75 g of dry tetrahydrofuran was added dropwise over two hours with stirring to a gently refluxing mixture of 13.1 g (0.54 mole) of fresh magnesium turnings, the heel from a previous run containing 0.21 mole of unreacted magnesium, and 75 g of dry tetrahydrofuran in a dry reaction vessel. Upon complete addition, the reaction mixture was heated at reflux for five additional hours. Gas chromatographic analysis of a quenched sample of the reaction mixture showed 1.2% of unreacted 3-chloro-2-methylbiphenyl and 92.4% of 2-methylbiphenyl. The reaction mixture was allowed to cool overnight. a gently refluxing in a dry reaction vessel Upon complete addition the reaction mixture was heated at reflux for five additional hours to cool overnight