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R. Dalpozzo, A. De Nino, L. Maiuolo, P. A. Procopio, M. Nardi, G. Bartoli and R. Romeo, “Highly Efficient and Versatile Acetylation of Alcohols Catalyzed by Cerium(III) Triflate,” Tetrahedron Letters, Vol. 44, No. 30, 2003, pp. 5621-5624. doi:10.1016/S0040-4039(03)01358-3

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• TITLE: Rate Enhancements in the Acetylation and Benzoylation of Certain Aromatic Compounds with Vilsmeier-Haack Reagents Using Acetamide, Benzamide and Oxychlorides under Non-Conventional Conditions

  AUTHORS: Marri Venkateswarlu, Kamatala Chinna Rajanna, Mukka Satish Kumar, Utkoor Umesh Kumar, Soma Ramgopal, Pondichery Kuppuswamy Saiprakash

  KEYWORDS: Acetylation, Benzoylation, Vilsmeier-Haack Reagent (VHR), Acetamide, Benzamide, Micro Wave Irradiation, Grinding, Sonication

  JOURNAL NAME: International Journal of Organic Chemistry, Vol.1 No.4, December 27, 2011

  ABSTRACT: Acetylation and benzoylation reactions of certain aromatic aldehydes, ketones with Vilsmeier-Haack Re- agents using Acetamide and Oxychloride (SOCl2 or POCl3) under conventional (thermal) and non conven- tional [microwave irradiated (MIR), ultrasonic assisted and solvent free mortar pestle (grinding)] conditions. Reactions afforded good to excellent yields of products with both the VH reagents, reaction times were fairly less in the case of [amide/POCl3] than those of [amide/SOCl2] reagent. Reactions are dramatically acceler- ated in under sonicated and microwave irradiations with a trend: MIR (few seconds) >> Sonication (minutes) > Grinding (min) >> thermal (several hrs).