IJOC  Vol.2 No.4 , December 2012
Ultrasonically Assisted Synthesis of Aromatic Sulfonic Acids under Vilsmeier Haack Conditions in Acetonitrile Medium
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.

Cite this paper
K. Rajanna, P. Venkanna, M. Kumar and S. Gopal, "Ultrasonically Assisted Synthesis of Aromatic Sulfonic Acids under Vilsmeier Haack Conditions in Acetonitrile Medium," International Journal of Organic Chemistry, Vol. 2 No. 4, 2012, pp. 336-340. doi: 10.4236/ijoc.2012.24046.
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