Reaction #167810

Reaction equation

CH2Cl2 MeOH

(8S)-2-morpholin-4-yl-8-trifluoromethyl-6,7,8,9-tetrahydropyrimido[1,2-a]pyrimidin-4-one

sodium hydride

2,6-difluorobenzoyl chloride

→

(8S)-9-[(2,6-difluorophenyl)carbonyl]-2-(morpholin-4-yl)-8-(trifluoromethyl)-6,7,8,9-tetrahydro-4 H-pyrimido[1,2-a]pyrimidin-4-one

Yield 5.0%

Solvents

tetrahydrofuran

Conditions

Workup

1. 1
   OtherThe product is prepared

Procedure

The product is prepared according to the procedure described in Example 18, using 300 mg of (8S)-2-morpholin-4-yl-8-trifluoromethyl-6,7,8,9-tetrahydropyrimido[1,2-a]pyrimidin-4-one (Example 1e), 47 mg of sodium hydride and 174 mg of 2,6-difluorobenzoyl chloride in 4 ml of tetrahydrofuran. After three successive purifications by silica chromatography (eluent: CH2Cl2/MeOH; gradient of 100/0 to 98/02 then 98/1 and 98/2), 22 mg of (8S)-9-[(2,6-difluorophenyl)carbonyl]-2-(morpholin-4-yl)-8-(trifluoromethyl)-6,7,8,9-tetrahydro-4 H-pyrimido[1,2-a]pyrimidin-4-one are obtained in the form of a white solid, the characteristics of which are the following:

Source