3,3-diethoxypropan-1-amine

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:

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

Procedure: To a nitrogen purged flask equipped with a mechanical stirrer is added 130 kg (311 mol) of (±)4-fluoro-α-[2-methyl-1-oxopropyl]-γ-oxo-N,β-diphenylbenzenebutaneamide mixture of [R-(R*,R*)], [R-(R*,S*)], [S-(R*,R*)]and [S-(R*,S*)]isomers, 5%0 L of heptanes and 60 L of toluene, 59 kg (400 mol) of 3-amino-1,1-diethoxypropane, and 22.3 kg (218 mol) of pivalic acid. The mixture is stirred and heated 1o reflux, removing water with a Dean Stark trap. The mixture is refluxed 32 hours and slowly cooled to 60°-65° C., diluted with 500 L of 2-propanol-water (3:2), seeded, and cooled to 20°-25° C. The product is isolated by filtration, washed with 300 L of 2-propanol, and dried in vacuo to yield 133.5 kg of 1-(3,3-diethoxypropyl)-5-(4-fluorophenyl)-2-(1-methylethyl)-N,4-diphenyl-lH-pyrrole-3-carboxamide; mp 125.1°-127.7° C. after recrystallization from ethanol To a nitrogen purged flask equipped with a mechanical stirrer is added reflux removing water with a Dean Stark trap The mixture is refluxed 32 hours slowly cooled to 60°-65° C. diluted with 500 L of 2-propanol-water (3:2) cooled to 20°-25° C The product is isolated by filtration washed with 300 L of 2-propanol dried in vacuo

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

Procedure: The title compound was prepared as described in Chiral Example 11 Step 2 with (R)-quinuclidin-3-yl((3-(3-hydroxypropoxy)phenyl)(phenyl)methyl)carbamate and 4-(1,3-dioxolan-2-ylmethyl)-benzoic acid replacing 4-((3-(phenyl((((R)-quinuclidin-3-yloxy)carbonyl)amino)methyl)phenoxy)methyl)benzoic acid and 1-amino-3,3-diethoxypropane, respectively.

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

Procedure: To a stirred solution of 4-((3-(phenyl((((R)-quinuclidin-3-yloxy)carbonyl)amino)-methyl)phenoxy)methyl)benzoic acid (0.300 g, 0.57 mmol) in DMF (2.5 mL), was added HATU (0.262 g, 0.69 mmol) and diisopropylethylamine (0.250 mL, 1.43 mmol), and the reaction mixture was stirred at room temperature for 30 minutes. 1-Amino-3,3-diethoxypropane (0.139 mL, 0.86 mmol) was added, and the reaction mixture was stirred at room temperature for 18 hours. The reaction mixture was diluted with ethyl acetate and washed sequentially with saturated sodium hydrogen carbonate and brine (×2). The organic phase was dried wih anhydrous sodium sulfate, and filtered, and the solvent was evaporated at reduced pressure. The crude material was purified by silica gel chromatography eluting with 100% iso-hexane to 100% ethyl acetate in iso-hexane to afford the title compound (0.347 g, 99%), which was used directly in the next step. the reaction mixture was stirred at room temperature for 18 hours washed sequentially with saturated sodium hydrogen carbonate and brine (×2) The organic phase was dried wih anhydrous sodium sulfate filtered the solvent was evaporated at reduced pressure The crude material was purified by silica gel chromatography eluting with 100% iso-hexane to 100% ethyl acetate in iso-hexane

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: 3,3-Diethoxypropylamine (210.7 g, 1.43 mol) was added in portions to the solution of 2,2-dimethyl-5-(methylsulfanyl-thiophene-3-ylamino-methylene)-[1,3]dioxane-4,6-dione (407.3 g, 1.36 mol) in dichloromethane (1.7 L) and methanol (0.36 L) over 60 min, while the reaction temperature was kept under 25° C. with a water bath. After stirring for 1.5 h at room temperature, the reaction mixture was diluted with dichloromethane (0.8 L). The organic layer was separated and washed with aqueous ammonium chloride solution (400 mL, made of 200 mL of sat. NH4Cl and 200 mL of water), brine (300 mL) and dried over magnesium sulfate. Concentration of the reaction mixture under reduced pressure afforded a dark oil. Xylenes (500 ml) were added and the mixture concentrated under reduced pressure to give the intermediate 5-((3,3-Diethoxypropylamino)(thiophene-3-ylamino)methylene)-2,2-dimethyl-1,3-dioxane-4,6-dione. The resultant dark oil was used directly in next step without further purification. 1H NMR (400 MHz, CDCl3) δ 1.65 (m, 6H), 1.73 (s, 6H), 1.78 (m, 2H), 2.98 (q, 2H, J=6.4 Hz), 3.45 (m, 2H), 3.60 (m, 2H), 4.50 (t, 1H, J=5.2 Hz), 6.98 (dd, 1H, J=1.6, 5.2 Hz), 7.05 (dd, 1H, J=1.2, 3.2 Hz), 7.33 (dd, 1H, J=3.2, 5.2 Hz), 10.2 (s, 1H), 11.3 (s, 1H). was kept under 25° C. with a water bath The organic layer was separated washed with aqueous ammonium chloride solution (400 mL, made of 200 mL of sat. NH4Cl and 200 mL of water), brine (300 mL) dried over magnesium sulfate Concentration of the reaction mixture under reduced pressure afforded a dark oil the mixture concentrated under reduced pressure