Réaction #2993

Équation de réaction

sodium chloride

3-nitro-4-chlorobenzaldehyde

3,4,5-trimethoxybenzyltriphenylphosphine bromide

sodium hydride

→

intended compound

Rendement 50.9%

(Z)-1-(3-nitro-4-chlorophenyl)-2-(3,4,5-trimethoxyphenyl)ethene

Rendement 50.9%

Solvants

benzene

benzene

acetic acid

Conditions de réaction

Traitement

1. 1
   workup.ADDITIONdispersed
2. 2
   workup.ADDITIONtherein was added
3. 3
   Autrereacted for 15 hours at room temperature
4. 4
   AutreThe reaction liquid
5. 5
   workup.ADDITIONwas added
6. 6
   Extractionthe resulting liquid was extracted with dichloromethane
7. 7
   SéchageThe extract was dried with anhydrous sodium sulfate
8. 8
   Concentrationconcentrated
9. 9
   Autrepurified by silica gel column chromatography diethyl (ether:hexane--1:2 by volume)

Mode opératoire

1.0 g of 3-nitro-4-chlorobenzaldehyde and 2.8 g of 3,4,5-trimethoxybenzyltriphenylphosphine bromide were dissolved in 50 ml of benzene, and a benzene solution containing 260 mg of sodium hydride dispersed therein was added thereto and reacted for 15 hours at room temperature. The reaction liquid was neutralized with acetic acid, saturated sodium chloride solution was added thereto, and the resulting liquid was extracted with dichloromethane. The extract was dried with anhydrous sodium sulfate, concentrated and then purified by silica gel column chromatography diethyl (ether:hexane--1:2 by volume) to obtain 0.95 g of the intended compound. The yield of the product was 50.4%.

Source