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Ultrasonic and Microwave Effects on the Benzamide/Sulfuryl Chloride Mediated Benzoylation of Benzene Derivatives under Vilsmeier-Haack Conditions

Journal: Chemical Methodologies (Vol.7, No. 9)

Publication Date:

Authors : ; ; ; ; ;

Page : 650-658

Keywords : Ultrasonic and microwave irradiation; Benzamide/ SO2Cl2; Rate accelerations;

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Benzamide/ Sulfuryl Chloride (SO2Cl2) reagent has been developed as a Vilsmeier- Haack(VH) reagent for benzoylation of aromatic compounds by using the conventional and ultrasonic sonication (US), and microwave (MW) conditions. Benzoylation is much more competent and faster than the analogous VH ((Benzamide/ POCl3) or (Benzamide/ SOCl2)) reagents and afforded benzoyl derivatives in good yields.  Reaction times are moderately less than those observed with [Benzamide/ POCl3] and (Benzamide/ SOCl2) reagents. Reaction times are far less in microwave assisted (MWAR) reactions than ultrasonically assisted (USAS) reactions , which in turn are less than the conventional method with a decreasing  trend: MWAR (seconds)

Last modified: 2024-02-28 05:42:15