Реакция #531823

Уравнение реакции

2-[3-chloro-1-(3-chloro-2-pyridinyl)-1H-pyrazol-5-yl]-6-cyano-8-methyl-4H-3,1-benzoxazin-4-one

cyanobenzoxazinone

2-[3-chloro-1-(3-chloro-2-pyridinyl)-1H-pyrazol-5-yl]-6-cyano-8-methyl-4H-3,1-benzoxazin-4-one

methylamine

→

title compound

3-chloro-1-(3-chloro-2-pyridinyl)-N-[4-cyano-2-methyl-6-[(methylamino)carbonyl]phenyl]-1H-pyrazole-5-carboxamide

Растворители

tetrahydrofuran

Условия реакции

Обработка

1. 1
   ДругоеThe tetrahydrofuran solvent was evaporated under reduced pressure
2. 2
   Другоеthe residual solid was purified by chromatography on silica gel

Методика

To a solution of 2-[3-chloro-1-(3-chloro-2-pyridinyl)-1H-pyrazol-5-yl]-6-cyano-8-methyl-4H-3,1-benzoxazin-4-one (e.g. the cyanobenzoxazinone product of Step F) (100 mg, 0.25 mmol) in tetrahydrofuran (5 mL) was added dropwise methylamine (2.0 M solution in MT, 0.5 mL, 1.0 mmol) and the reaction mixture was stirred for 5 minutes, at which point thin layer chromatography on silica gel confirmed completion of the reaction. The tetrahydrofuran solvent was evaporated under reduced pressure, and the residual solid was purified by chromatography on silica gel to afford the title compound, a compound of the present invention, as a white solid (52 mg), which decomposed in the melting apparatus above 140° C.

Источник