1-bromo-3-butylbenzene

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

Procedure: Using essentially the same procedure described in Example 1, step a, and employing 1-bromo-3-butylbenzene and 1-(difluoromethoxy)-4-ethynylbenzene, the phenylethynylbenzene product was obtained. This product was purified on silica gel (Biotage) using hexanes/EtOAc 50/1 as the eluting solvents to give 1-butyl-3-{[4-(difluoromethoxy)phenyl]ethynyl}benzene as a colorless oil (0.56 g, 28% yield), MS m/e M+ 300; 1H NMR (400 MHz, DMSO-d6) 0.82 (t, J=7.19 Hz, 3H), 1.25 (m, 2H), 1.55 (m, 2H), 2.56 (t, J=7.56 Hz, 2H), 7.2 (m, 3H), 7.35-7.45 (m, 4H), 7.58 (d, J=8.79 Hz, 2H).

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 1-(3-bromophenyl)butan-1-one (1.0 g, 4.4 mmol) and diglyme (10 mL) was treated with hydrazine (1.49 g, 44 mmol), stirred at 100° C. for 2 h, treated with KOH (1.23 g, 22 mmol), stirred at 150° C. for 6 hours, cooled to room temperature, poured into water and extracted with ethyl ether. The organic extracts were combined, dried over MgSO4 and concentrated under vacuum. Purification of the resultant residue on silica gel (ISCO) using hexanes as the eluting solvent gave 1-bromo-3-butylbenzene as a clear oil (0.81 g, 86% yield). stirred at 150° C. for 6 hours cooled to room temperature extracted with ethyl ether dried over MgSO4 concentrated under vacuum Purification of the resultant residue on silica gel (ISCO)

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

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

Procedure: Using essentially the same procedure described in Example 1, step a, and employing 1-bromo-3-butylbenzene and 1-(difluoromethoxy)-4-ethynylbenzene, the phenylethynylbenzene product was obtained. This product was purified on silica gel (Biotage) using hexanes/EtOAc 50/1 as the eluting solvents to give 1-butyl-3-{[4-(difluoromethoxy)phenyl]ethynyl}benzene as a colorless oil (0.56 g, 28% yield), MS m/e M+ 300; 1H NMR (400 MHz, DMSO-d6) 0.82 (t, J=7.19 Hz, 3H), 1.25 (m, 2H), 1.55 (m, 2H), 2.56 (t, J=7.56 Hz, 2H), 7.2 (m, 3H), 7.35-7.45 (m, 4H), 7.58 (d, J=8.79 Hz, 2H).

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 1-(3-bromophenyl)butan-1-one (1.0 g, 4.4 mmol) and diglyme (10 mL) was treated with hydrazine (1.49 g, 44 mmol), stirred at 100° C. for 2 h, treated with KOH (1.23 g, 22 mmol), stirred at 150° C. for 6 hours, cooled to room temperature, poured into water and extracted with ethyl ether. The organic extracts were combined, dried over MgSO4 and concentrated under vacuum. Purification of the resultant residue on silica gel (ISCO) using hexanes as the eluting solvent gave 1-bromo-3-butylbenzene as a clear oil (0.81 g, 86% yield). stirred at 150° C. for 6 hours cooled to room temperature extracted with ethyl ether dried over MgSO4 concentrated under vacuum Purification of the resultant residue on silica gel (ISCO)

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

Procedure: Using essentially the same procedure described in Example 1, step a, and employing 1-bromo-3-butylbenzene and 1-(difluoromethoxy)-4-ethynylbenzene, the phenylethynylbenzene product was obtained. This product was purified on silica gel (Biotage) using hexanes/EtOAc 50/1 as the eluting solvents to give 1-butyl-3-{[4-(difluoromethoxy)phenyl]ethynyl}benzene as a colorless oil (0.56 g, 28% yield), MS m/e M+ 300; 1H NMR (400 MHz, DMSO-d6) 0.82 (t, J=7.19 Hz, 3H), 1.25 (m, 2H), 1.55 (m, 2H), 2.56 (t, J=7.56 Hz, 2H), 7.2 (m, 3H), 7.35-7.45 (m, 4H), 7.58 (d, J=8.79 Hz, 2H).

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 1-(3-bromophenyl)butan-1-one (1.0 g, 4.4 mmol) and diglyme (10 mL) was treated with hydrazine (1.49 g, 44 mmol), stirred at 100° C. for 2 h, treated with KOH (1.23 g, 22 mmol), stirred at 150° C. for 6 hours, cooled to room temperature, poured into water and extracted with ethyl ether. The organic extracts were combined, dried over MgSO4 and concentrated under vacuum. Purification of the resultant residue on silica gel (ISCO) using hexanes as the eluting solvent gave 1-bromo-3-butylbenzene as a clear oil (0.81 g, 86% yield). stirred at 150° C. for 6 hours cooled to room temperature extracted with ethyl ether dried over MgSO4 concentrated under vacuum Purification of the resultant residue on silica gel (ISCO)

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

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

Procedure: Under nitrogen stream, to a solution of 1-bromo-3-bromomethylbenzene (25 g) in tetrahydrofuran (200 ml) were sequentially added dropwise n-propylmagnesium bromide (60 ml, 2M solution in tetrahydrofuran) and lithium tetrachlorocuprate (5 ml, 0.1M solution in tetrahydrofuran) at −78° C. Then, this reaction mixture was stirred at 0° C. for 2 hours. Under ice-cooling, to this reaction mixture were sequentially added a saturated aqueous solution of ammonium chloride (100 ml) and water (100 ml), and the mixture was extracted with ethyl acetate (200 ml). The resulting aqueous layer was again extracted with ethyl acetate (100 ml), the combined organic layer was washed with a saturated aqueous solution of sodium chloride (100 ml), and dried over anhydrous sodium sulfate. This organic layer was concentrated under reduced pressure, the resulting residue was purified by silica gel chromatography (eluent: n-hexane/ethyl acetate=1/0 to 100/1) to give the titled compound (8.5 g). Under ice-cooling, to this reaction mixture the mixture was extracted with ethyl acetate (200 ml) The resulting aqueous layer was again extracted with ethyl acetate (100 ml) the combined organic layer was washed with a saturated aqueous solution of sodium chloride (100 ml) dried over anhydrous sodium sulfate This organic layer was concentrated under reduced pressure the resulting residue was purified by silica gel chromatography (eluent: n-hexane/ethyl acetate=1/0 to 100/1)