反応 #81910

反応方程式

2-amino-6-(2,6-dichlorophenyl)-8-methyl-pyrido[2,3-d]pyrimidin-7-(8H)-one

2-amino-6-(2,6-dichlorophenyl)-8-methyl-pyrido[2,3 -d]pyrimidin-7(8H)-one

Lawesson's Reagent

→

desired compound

2-Amino-6-(2,6-dichlorophenyl)-8-methyl-pyrido[2,3-d]-pyrimidin-7(8H)-thion

溶媒

pyridine

反応条件

後処理

1. 1
   温度was heated
2. 2
   温度at reflux
3. 3
   その他The solvent was evaporated under reduced pressure
4. 4
   その他the residue was triturated with 20 mL of water
5. 5
   ろ過filtered
6. 6
   洗浄the cake washed well with water
7. 7
   その他Purification

実験手順

A mixture of 0.321 g (1.0 mmol) of 2-amino-6-(2,6-dichlorophenyl)-8-methyl-pyrido[2,3-d]pyrimidin-7-(8H)-one from Example 12 and 0.404 g (1.0 mmol) of Lawesson's Reagent in 10 mL of pyridine was heated at reflux with stirring for 24 hours. The solvent was evaporated under reduced pressure, and the residue was triturated with 20 mL of water, filtered, and the cake washed well with water. Purification was by silica gel chromatography to afford the desired compound identified as 2-amino-6-(2,6-dichlorophenyl)-8-methyl-pyrido[2,3-d]-pyrimidin-7(8H)-thione.

出典