piperidin-2-ylmethanamine

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: The title compound was prepared in analogy to Example 3-1 in Scheme 5 by using 4-(4-chloro-6-methylquinolin-2-yl)-2,3,4,5-tetrahydro-1,4-benzothiazepine 1,1-dioxide (prepared in analogy to the one in Example 2-1) and 1-(piperidin-2-yl)methanamine. MS obsd. (ESI+) [(M+H)+] 451, 1H NMR (400 MHz, CD3OD) δ ppm 8.07 (d, J=7.6 Hz, 1 H), 7.93 (s, 1 H), 7.85 (d, J=7.6 Hz, 1 H), 7.73-7.70 (m, 2 H), 7.62-7.58 (m, 2 H), 6.02 (s, 1 H), 5.35 (s, 2 H), 4.51 (s, 2 H), 3.75-3.71 (m, 4 H), 3.51-3.40 (m, 2 H), 2.98-2.92 (m, 1 H), 2.46 (s, 3 H), 2.11-2.05 (m, 1 H), 1.96-1.90 (m, 2 H), 1.78-1.56 (m, 3 H).

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

実験手順: The title compound was prepared in analogy to Example 3-1 in Scheme 5 by using 4-(4-chloro-6-methylquinolin-2-yl)-2,3,4,5-tetrahydro-1,4-benzothiazepine 1,1-dioxide (prepared in analogy to the one in Example 2-1) and 1-(piperidin-2-yl)methanamine. MS obsd. (ESI+) [(M+H)+] 451, 1H NMR (400 MHz, CD3OD) δ ppm 8.07 (d, J=7.6 Hz, 1 H), 7.93 (s, 1 H), 7.85 (d, J=7.6 Hz, 1 H), 7.73-7.70 (m, 2 H), 7.62-7.58 (m, 2 H), 6.02 (s, 1 H), 5.35 (s, 2 H), 4.51 (s, 2 H), 3.75-3.71 (m, 4 H), 3.51-3.40 (m, 2 H), 2.98-2.92 (m, 1 H), 2.46 (s, 3 H), 2.11-2.05 (m, 1 H), 1.96-1.90 (m, 2 H), 1.78-1.56 (m, 3 H).

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

実験手順: A mixture of methyl 2,5-bis(2,2,2-trifluoroethoxy)benzoate (1.5 g), 2-(aminomethyl)piperidine (0.62 g) in toluene (3 ml) was stirred at reflux for 10 hours. After cooling to room temperature, water (10 ml) was added and two layers solution were separated. The aqueous layer was extracted with toluene (2×10 ml) and the combined organic layers were washed with water (3×10 ml). The organic layer was concentrated under reduced pressure to give Flecainide free base as a white solid (1.63 g, 85%). at reflux for 10 hours two layers solution were separated The aqueous layer was extracted with toluene (2×10 ml) the combined organic layers were washed with water (3×10 ml) The organic layer was concentrated under reduced pressure

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: contacting the resultant 2,5-bis(2,2,2-trifluoroethoxy)benzoic acid chloride with 2-aminomethylpiperidine, whereby there is formed 2,5-bis(2,2,2-trifluoroethoxy)-N-(2-piperidylmethyl)benzamide.

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

実験手順: contacting the resultant 2,5-bis(2,2,2-trifluoroethoxy)benzoic acid chloride with 2-aminomethylpiperidine, whereby there is formed 2,5-bis(2,2,2-trifluoroethoxy)-N-(2-piperidylmethyl)benzamide.

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

実験手順: In yet another aspect of the invention, a method of preparing a 2,5-bis(2,2,2-trifluoroethoxy)-N-(2-piperidylmethyl)benzamide is provided which comprises the following steps. The compound 1,4-dibromobenzene is contacted with an alkali metal 2,2,2-trifluoroethoxide in the presence of cuprous or cupric ion and in a strongly polar solvent comprising 2,2,2-trifluoroethanol to yield 1,4-bis(2,2,2-trifluoroethoxy)benzene. Then, in the presence of a Lewis acid catalyst, the 1,4-bis(2,2,2-trifluoroethoxy)benzene is treated with an acetylation agent under conditions to create 2,5-bis(2,2,2-trifluoroethoxy)acetophenone. The methyl moiety of the acetophenone function of the 2,5-bis(2,2,2-trifluoroethoxy)acetophenone is thereafter replaced using hypochlorite to yield 2,5-bis(2,2,2-trifluoroethoxy)benzoic acid. Subsequently, the 2,5-bis(2,2,2-trifluoroethoxy)benzoic acid is treated with an inorganic chloride to provide 2,5-bis(2,2,2-trifluoroethoxy)benzoic acid chloride. Finally, the resultant 2,5-bis(2,2,2-trifluoroethoxy)benzoic acid chloride is contacted with 2-aminomethylpiperidine, whereby there is formed 2,5-bis(2,2,2-trifluoroethoxy)-N-(2-piperidylmethyl)benzamide.

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

実験手順: In still another aspect of the invention, a method of preparing a 2,5-bis(2,2,2-trifluoroethoxy)-N-(2-piperidylmethyl)benzamide is provided which comprises the following steps. Hydroquinone is contacted with 2,2,2-trifluoroethyl trifluoromethanesulfonate under conditions to yield 1,4-bis(2,2,2-trifluoroethoxy)benzene. Then, in the presence of a Lewis acid catalyst, the 1,4-bis(2,2,2-trifluoroethoxy)benzene is treated with an acetylation agent under conditions to create 2,5-bis(2,2,2-trifluoroethoxy)acetophenone. The methyl moiety of the acetophenone function of the 2,5-bis(2,2,2-trifluoroethoxy)acetophenone is thereafter replaced using hypochlorite to yield 2,5-bis(2,2,2-trifluoroethoxy)benzoic acid. Subsequently, the 2,5-bis(2,2,2-trifluoroethoxy)benzoic acid is treated with an inorganic chloride to provide 2,5-bis(2,2,2-trifluoroethoxy)benzoic acid chloride. Finally, the resultant 2,5-bis(2,2,2-trifluoroethoxy)benzoic acid chloride is contacted with 2-aminomethylpiperidine, whereby there is formed 2,5-bis(2,2,2-trifluoroethoxy)-N-(2-piperidylmethyl)benzamide.

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

実験手順: Prepared analogously to Example 1d from rac.-2-chloro-4-{N-[1-(5-chloro-1H-benzimidazol-2-yl)ethyl]aminocarbonyl}benzoic acid, rac.-2-aminomethylpiperidine, PFTU, and diisopropylethylamine in DMSO at ambient temperature. HPLC-MS results: retention time: 3.93 minutes; C23H25Cl2N5O2 (474.39); mass spectrum: (M−H)−=473/475/477 (chlorine isotope). HPLC-MS results