Hydrogen Peroxide → HCID 67288166, Verbindung

To a solution of 750 mg, (2.17 mmol) N-(4,4-dimethylpentyl)-4-methyl-6-morpholino-2-vinyl-pyridine-3-carboxylic acid amide (synthesized according to the methods described for example 9) in THF (10 ml) was added dropwise 730 μl (7.6 mmol) at 0° C. and the resulting mixture was stirred at RT for 16 h. The reaction mixture was cooled to 0° C. and a 1N aq. NaOH sol (4 ml) was added dropwise over a period of 0.5 h, followed by the addition of H2O2 (30% in water, 4 ml). Then the reaction mixture was stirred at RT for 4 h and was then extracted with EtOAc. The organic layer was dried over Na2SO4 and concentrated in vacuo. After CC (hexane/EtOAc 3:7) a mixture of N-(4,4-dimethylpentyl)-2-(2-hydroxyethyl)-4-methyl-6-morpholino-pyridine-3-carboxylic acid amide and N-(4,4-dimethylpentyl)-2-(1-hydroxyethyl)-4-methyl-6-morpholino-pyridine-3-carboxylic acid amide was obtained. This mixture was dissolved in THF (6 ml) and benzene (6 ml) and 24 mg, 0.0716 mmol) TBAHS was added at RT followed by the addition of a 25% aq. NaOH sol (6 ml) and 0.450 μl (7.16 mmol) iodomethane. Then the reaction mixture was slowly heated to 70° C. and stirred at the same temperature for 3 h. The additional 0.450 μl (7.16 mmol) iodomethane was added and stirring was continued at 70° C. for another 3 h. Then the organic layer was separated and the aq. layer was extracted with EtOAc. The combined organic layer was washed with water, and brine, dried over Na2SO4 and concentrated in vacuo. Purification of this residue by CC (hexane/EtOAc 3:2) provided 60 mg (0.16 mmol, 6%) N-(4,4-Dimethyl-pentyl)-2-(2-methoxy-ethyl)-4-methyl-6-morpholin-4-yl-pyridine-3-carboxylic acid amide (example 358). [M+H]+ 377.3