methyl 11-bromoundecanoate

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

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

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

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: The product is produced as described in example 1 from 1.3 g. of NaH (80% suspension in mineral oil), 10 g. of 1-phenylbenzimidazolin-2-one, 200 cc. of DMF, 13.3 g. of 11-bromoundecanoic acid methyl ester and 1.3 g. of NaJ. Eluant in chromatographic purification: hexane/ethylacetate. The product is produced Eluant in chromatographic purification

Conditions: temp:22.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of commercially available methyl 11-bromoundecanoate (5.80 g, 20.8 mmol) dissolved in dry acetone (70 mL) was added sodium iodide (4.05 g, 27.0 mmol). The reaction mixture was stirred at room temperature (22° C.) for 19 h under an inert nitrogen atmosphere. Afterwards, the acetone was evaporated and the residue transferred into an extraction funnel with diethyl ether (100 mL) and water (40 mL). The organic phase was washed with a thiosulfate solution (5% w/v, 2×20 mL) and with water 3×40 mL. The organic phase was dried, filtered on a short column of celite and celica (1 cm/4 cm) with a mixture of hexanes:acetone as the eluent. Evaporation of the solvent gave the title compound (95%) as an oil, which was used without further purification at the next step. Afterwards, the acetone was evaporated the residue transferred into an extraction funnel with diethyl ether (100 mL) and water (40 mL) The organic phase was washed with a thiosulfate solution (5% w/v, 2×20 mL) and with water 3×40 mL The organic phase was dried filtered on a short column of celite and celica (1 cm/4 cm) with a mixture of hexanes Evaporation of the solvent

Conditions: temp:22.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of commercially available methyl 11-bromoundecanoate (5.80 g, 20.8 mmol) dissolved in dry acetone (70 mL) was added sodium iodide (4.05 g, 27.0 mmol). The reaction mixture was stirred at room temperature (22° C.) for 19 h under an inert nitrogen atmosphere. Afterwards, the acetone was evaporated and the residue transferred into an extraction funnel with diethyl ether (100 mL) and water (40 mL). The organic phase was washed with a thiosulfate solution (5% w/v, 2×20 mL) and with water 3×40 mL. The organic phase was dried, filtered on a short column of celite and celica (1 cm/4 cm) with a mixture of hexanes:acetone as the eluent. Evaporation of the solvent gave the title compound (95%) as an oil, which was used without further purification at the next step. Afterwards, the acetone was evaporated the residue transferred into an extraction funnel with diethyl ether (100 mL) and water (40 mL) The organic phase was washed with a thiosulfate solution (5% w/v, 2×20 mL) and with water 3×40 mL The organic phase was dried filtered on a short column of celite and celica (1 cm/4 cm) with a mixture of hexanes Evaporation of the solvent

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

Procedure: As described in example 1(a), the reaction is carried out with 28.7 g (0.11 mol) of 4-chloro-N-(4-methoxyphenyl)-benzamide, 4.5 g (0.18 mol) of sodium hydride, 36.7 g (0.13 mol) of 11-bromoundecanoic acid methyl ester, 100 cc. of dimethylformamide and 3 g (0.02 mol) of sodium iodide. Reaction time: 5 hours, reaction temperature: 80° C. The crude product is used in the next step without further purification. Reaction time 5 hours, reaction temperature 80° C The crude product is used in the next step without further purification

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

Procedure: Compound 103 (17.8 g, 64 mmol), thioacetic acid (9.7 g, 9.0 ml, 128 mmol), methyltrioctylammonium chloride (0.5 g), cesium carbonate (25 g, 77 mmol), dichloromethane (95 ml) and water (95 ml) were stirred at room temperature for 15 h. The reaction was monitored by TLC (SiO2, ethyl acetate:isooctane, 1:5). The mixture was extracted with dichloromethane and the combined extracts were dried (Na2SO4) and concentrated. Distillation gave pure 104 (15.6 g, 89%) with b.p. 137°-139° (0.1 torr) and m.p. <25° (from isooctane). 1H-NMR (CDCl3, Me4Si) δ 3.67 (s, 3H, MeO), 2.86 (t, 2H, J=7.1 Hz, S--CH2), 2.32 (s, 3H, MeCO), 2.30 (t, 2H, J=7.7 Hz, CH2CO). 13C-NMR (CDCl3, Me4Si) δ 195.9, 174.1 (CO), 51.3, 34.0, 30.5, 29.4, 29.3, 29.2, 29.1, 29.0, 28.9, 28.7, 24.8. The mixture was extracted with dichloromethane the combined extracts were dried (Na2SO4) concentrated Distillation

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

Procedure: Compound 103 (17.8 g, 64 mmol), thioacetic acid (9.7 g, 9.0 ml, 128 mmol), methyltrioctylammonium chloride (0.5 g), cesium carbonate (25 g, 77 mmol), dichloromethane (95 ml) and water (95 ml) were stirred at room temperature for 15 h. The reaction was monitored by TLC (SiO2, ethyl acetate:isooctane, 1:5). The mixture was extracted with dichloromethane and the combined extracts were dried (Na2SO4) and concentrated. Distillation gave pure 104 (15.6 g, 89%) with b.p. 137°-139° (0.1 torr) and m.p. <25° (from isooctane). 1H-NMR (CDCl3, Me4Si) δ 3.67 (s, 3H, MeO), 2.86 (t, 2H, J=7.1 Hz, S--CH2), 2.32 (s, 3H, MeCO), 2.30 (t, 2H, J=7.7 Hz, CH2CO). 13C-NMR (CDCl3, Me4Si) δ 195.9, 174.1 (CO), 51.3, 34.0, 30.5, 29.4, 29.3, 29.2, 29.1, 29.0, 28.9, 28.7, 24.8. The mixture was extracted with dichloromethane the combined extracts were dried (Na2SO4) concentrated Distillation

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

Procedure: 11-Bromoundecanoic acid (commercial material, 25.0 g, 94 mmol), Duolite H+ resin (10 g), calcium chloride (26.2 g, 94 mmol) and methanol (700 ml) were stirred for 15 h. The methanol was removed and dichloromethane was added. The mixture was washed with water, dried (Na2SO4) and concentrated. Distillation gave pure 103 (22.0 g, 84%) with b.p. 103°-104° (2×10-2 torr). 1H-NMR (CDCl3, Me4Si) δ 3.67 (s, 3H, MeO), 3.41 (t, 2H, J=6.8 Hz, Br--CH2), 2.31 (t, 2H, J=7.3 Hz, CH2CO). The methanol was removed dichloromethane was added The mixture was washed with water dried (Na2SO4) concentrated Distillation