反応 #53322

反応方程式

2,4,6-trichloro-1,3,5-triazine

2-(bromomethyl)-1,3-dichlorobenzene

magnesium

4-amino-benzonitrile

2-(bromomethyl)-1,3-dichlorobenzene

→

4-[[4-chloro-6-[(2,6-dichlorophenyl)methyl]-1,3,5-triazin-2-yl]-amino]benzonitrile

収率 104.2%

溶媒

benzene

diethylether

diethylether

N,N-diisopropylethylamine

1,4-dioxane

diethylether

反応条件

後処理

1. 1
   その他the temperature below 15° C
2. 2
   workup.STIRRINGThe reaction mixture was stirred for one hour in an ice bath
3. 3
   workup.WAITfor 2 hours at RT
4. 4
   workup.STIRRINGthe reaction mixture was stirred at RT for 40 hours
5. 5
   その他The solvent was evaporated
6. 6
   workup.ADDITIONWater and ethylacetate were added
7. 7
   workup.STIRRINGThe solution was stirred
8. 8
   ろ過the solid was filtered off
9. 9
   洗浄washed with ethylacetate and water

実験手順

A solution of 2-(bromomethyl)-1,3-dichlorobenzene (about 10% of 0.383 mol) in diethylether (240 ml) was added to magnesium (0.383 mol) in diethylether (240 ml) under argon. Once the reaction started, the remainder of 2-(bromomethyl)-1,3-dichlorobenzene in diethylether was added. The solution was stirred at RT for 2.5 hours and then added via canula to a solution of 2,4,6-trichloro-1,3,5-triazine (0.319 mol) in benzene (480 ml) while keeping the temperature below 15° C. The reaction mixture was stirred for one hour in an ice bath, then for 2 hours at RT. A solution of 4-amino-benzonitrile (0.351 mol) in N,N-diisopropylethylamine (61.0 ml) and 1,4-dioxane (500 ml) was added and the reaction mixture was stirred at RT for 40 hours. The solvent was evaporated. Water and ethylacetate were added. The solution was stirred, then the solid was filtered off, washed with ethylacetate and water, yielding 129.9 g of 4-[[4-chloro-6-[(2,6-dichlorophenyl)methyl]-1,3,5-triazin-2-yl]-amino]benzonitrile (intermediate 27; mp. 243-244° C.).

出典