Réaction #59677

Équation de réaction

Thionyl chloride

3-iodo-4-methylbenzoic acid

→

desired product

3-Iodo-4methylbenzoyl chloride

Solvants

chloroform

Conditions de réaction

Traitement

1. 1
   AutreThe solvent was removed in vacuo and excess thionyl chloride
2. 2
   Autreremoved
3. 3
   Autreby azeotroping with toluene (3×30 ml)

Mode opératoire

Thionyl chloride (8.2 ml, 112.5 mmol) was added to a mixture of 3-iodo-4-methylbenzoic acid (18.5 g, 75 mmol) in chloroform (100 ml) and heated at 61° C. for 16 hours. The solvent was removed in vacuo and excess thionyl chloride removed by azeotroping with toluene (3×30 ml). The desired product was formed as a beige solid (19.5 g 93%) and used in subsequent reactions without further purification.

Source