2-Pyridinemethanamine → Tert-butyl (1-(5-chloro-4-((pyridin-2-ylmethyl)amino)pyrrolo[2,1-f][1,2,4]triazin-2-yl)cyclopropyl)carbamate

To a stirred solution of tert-butyl (1-(5-chloro-4-hydroxypyrrolo[2,1-f][1,2,4]triazin-2-yl)cyclopropyl)carbamate (500 mg, 1.54 mmol) in acetonitrile (50 mL) was added BOP (1.02 g, 2.31 mmol), DBU (0.464 mL, 3.08 mmol) and the reaction mixture was stirred at RT for 1 h. Pyridin-2-ylmethanamine (166 mg, 1.54 mmol) was added to the reaction mixture and stirred for 12 h. The reaction mixture was concentrated under reduced pressure. The residue was dissolved in ethyl acetate (100 mL) and washed water (2×30 mL). The organic layer was separated, dried over Na2SO4, filtered and concentrated under reduced pressure. The resulting residue was purified by CombiFlash ISCO (REDISEP®, SiO2, 12 g, 10% MeOH/CHCl3) to give tert-butyl (1-(5-chloro-4-((pyridin-2-ylmethyl)amino)pyrrolo[2,1-f][1,2,4]triazin-2-yl)cyclopropyl)carbamate (320 mg, 50.1%) as a pale yellow solid. LCMS Condition B-16: retention time 1.06 min, [M+1]=415.2. 1H NMR (300 MHz, DMSO-d6) δ ppm 0.89-0.92 (m, 2H), 1.15-1.17 (m, 2H), 1.38 (s, 9H), 4.75 (d, J=5.7 Hz, 2H), 6.69 (d, J=2.7 Hz, 1H), 7.25-7.33 (m, 3H), 7.52-7.56 (m, 1H), 7.73-7.76 (m, 1H), 7.96-7.98 (m, 1H), 8.53 (d, J=5.2 Hz, 1H).

1. stirringstirred for 12 h
2. concentrationThe reaction mixture was concentrated under reduced pressure
3. dissolutionThe residue was dissolved in ethyl acetate (100 mL)
4. washwashed water (2×30 mL)
5. customThe organic layer was separated
6. dry with materialdried over Na2SO4
7. filtrationfiltered
8. concentrationconcentrated under reduced pressure
9. customThe resulting residue was purified by CombiFlash ISCO (REDISEP®, SiO2, 12 g, 10% MeOH/CHCl3)

ORDレコード

ord-cebdc733c2094b39ad1b1b703ce63b2e

出典データセット

uspto-grants-2015_06

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US09050345B2