反応 #2072951

反応方程式

4-fluoro-3-{[2-(pyridin-2-ylamino)-thiazol-5-ylmethyl]-amino}-benzoic acid

compound 52A

4-fluoro-3-{[2-(pyridin-2-ylamino)-thiazol-5-ylmethyl]-amino}-benzoic acid

HATU

2,2-difluoro-1,3-propanediamine

DIPEA

→

title compound

収率 65.0%

N-(3-Amino-2,2-difluoro-propyl)-4-fluoro-3-{[2-(pyridin-2-ylamino)-thiazol-5-ylmethyl]-amino}-benzamide

収率 65.0%

溶媒

CH2Cl2

DMF

THF

反応条件

後処理

1. 1
   洗浄washed with brine
2. 2
   乾燥dried over Na2SO4
3. 3
   濃縮concentrated
4. 4
   その他The residue was purified by flash column chromatography [silica gel, 5% (NH3/MeOH(2M) in EtOAc]

実験手順

To a mixture of 4-fluoro-3-{[2-(pyridin-2-ylamino)-thiazol-5-ylmethyl]-amino}-benzoic acid (compound 52A, 21 mg, 0.06 mmol) and HATU (38 mg, 0.1 mmol) in DMF (0.2 ml) and THF (0.4 ml), were added 2,2-difluoro-1,3-propanediamine (ref. Tetrahedron, 8617, 1994) (60 mg, 0.54 mmol) and DIPEA (26 mg, 0.2 mmol). The resulting mixture was stirred at RT for 18 h, then diluted with CH2Cl2, washed with brine, dried over Na2SO4 and concentrated. The residue was purified by flash column chromatography [silica gel, 5% (NH3/MeOH(2M) in EtOAc] to afford the title compound (17 mg, 65%) as a white solid. LC/MS; (M+H)+=437.

出典