Dimethylformamide → thiomorpholine-4-carboxylic acid (4-{[2-(2-methyl-2H-indazol-6-ylcarbamoyl)-phenylamino]-methyl}-pyridin-2-yl)-amide

関与物質

反応条件

反応手順

2-[(2-bromo-pyridin-4-ylmethyl)-amino]-N-(2-methyl-2H-indazol-6-yl)-benzamide (500 mg, 1.15 mmol) was suspended in dioxane (14 mL) and treated consecutively with DMF (5 mL), Pd2dba3 (23 mg, 0.023 mmol), Xantphos (42 mg, 0.07 mmol), cesium carbonate (454 mg, 1.38 mmol) and thiomorpholine-4-carboxylic acid amide (511 mg, 3.5 mmol). The reaction mixture was placed under a nitrogen atmosphere and heated for 4 hours at 110° C. (bath temperature). On cooling the reaction was partitioned between EtOAc and water. The organic phase was washed with brine, dried, filtered and concentrated in vacuo. The residue was purified by chromatography on Isolute® Flash silica gel (Separtis) (Gradient elution: 100% CH2Cl2 to CH2Cl2/EtOH 10:1) to give thiomorpholine-4-carboxylic acid (4-{[2-(2-methyl-2H-indazol-6-ylcarbamoyl)-phenylamino]-methyl}-pyridin-2-yl)-amide (375 mg, 65%) as a solid; 1H-NMR (300 MHz, d6-DMSO) 10.14 (1H, s), 9.20 (1H, s), 8.25 (1H, s), 8.15 (1H, d), 8.11 (1H, s), 7.95 (1H, t), 7.80 (1H, s), 7.72 (1H, d), 7.63 (1H, d), 7.23-7.33 (2H, m), 6.95 (1H, d), 6.67 (1H, t), 6.54 (1H, d), 4.44 (2H, d), 4.13 (3H, s), 3.70-3.73 (4H, m), 2.55-2.58 (4H, m); m/z (ES+) 502 [M+H]+.

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