N-甲基异丁基胺

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a stirring solution of N-methylisobutylamine (3.21 g, 36.8 mmol, 4.45 mL) in 40 mL of CHCl3 was added benzoyl isothiocyanate (6.0 g, 36.8 mmol, 4.95 mL) After stirring for 45 min, the solution was concentrated to yield the title compound as a pale yellow solid (9.22 g, 100%). 1HNMR (400 MHz, CDCl3; 2:1 mixture of rotamers) δ 7.86 (d, 2H), 7.60 (t, 1H), 7.50 (t, 2H), 3.90 (d, 2H), 3.44 (s, 3H), 3.41 (d, 2H), 3.27 (s, 3H), 2.35-2.32 (m, 1H), 2.13 (m, 1H), 1.06 (d, 6H), 0.90 (d, 6H). the solution was concentrated

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To an ice-cold, stirred solution of methyl 3-(hydroxymethyl)-5-methylbenzoate (200 mg, 1.1 mmol) in methylene chloride (2.2 mL) is added triethylamine (0.304 mL, 2.2 mmol) followed by methanesulfonyl chloride (0.116 mL, 1.5 mmol). The reaction mixture is stirred for 15 min and filtered. N-Methylisobutylamine (287 mg, 3.3 mmol) is added to the filtrate, and the reaction mixture is stirred at room temperature for 5 h. The reaction mixture is diluted with methylene chloride (10 mL), washed with 1 N hydrochloric acid, and saturated sodium bicarbonate, dried (magnesium sulfate), filtered, and concentrated under reduced pressure. Purification by flash column chromatography (silica, 15% ethyl acetate/hexanes) provides the title compound. 1H NMR (300 MHz, CDCl3) δ 7.77 (s, 1H), 7.73 (s, 1H), 7.36 (s, 1H), 3.90 (s, 3H), 3.44 (s, 2H), 2.38 (s, 3H), 2.14 (s, 3H), 2.10 (d, J=8 Hz, 2H), 1.81 (m, 1H), 0.90 (d, J=7 Hz, 6H). filtered the reaction mixture is stirred at room temperature for 5 h washed with 1 N hydrochloric acid, and saturated sodium bicarbonate dried (magnesium sulfate) filtered concentrated under reduced pressure Purification by flash column chromatography (silica, 15% ethyl acetate/hexanes)

反应条件: temp:0.00; pressure:0.00; stir: