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Ultrasonically Assisted Synthesis of Aromatic Sulfonic Acids under Vilsmeier Haack Conditions in Acetonitrile Medium

Author(s): Kamatala Chinna Rajanna | Purugula Venkanna | Mukka Satish Kumar | Soma Ram Gopal

Journal: International Journal of Organic Chemistry
ISSN 2161-4687

Volume: 02;
Issue: 04;
Start page: 336;
Date: 2012;
Original page

Keywords: Vilsmeier Haack (VH) Reagent | Sulfonation | NaHSO3 | Sonication | Aromatic Compounds

Sulfonation of aromatic compounds (Phenols, Anilines) is triggered by Vilsmeier Haack (VH) reagent (DMF/POCl3) or (DMF/SOCl2) in the presence of NaHSO3 under Sonication and conventional stirred conditions at room temperature. The reactions afforded corresponding Sulfonic acid derivatives in very good yields. The results obtained under Sonication were enhanced when compared with the yields of the conventional method.
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