caa a22 4500 445876034 CHVBK 20180317145528.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s10593-011-0883-0 doi (NATIONALLICENCE)springer-10.1007/s10593-011-0883-0 Ultrasound-accelerated one-pot synthesis of N -acetyl-2-aryl-1,2-dihydro-4 H -3,1-benzoxazin-4-ones [Elektronische Daten] [D. Azarifar, D. Sheikh] The one-pot synthesis of N-acetyl-2-aryl-1,2-dihydro-4H-3,1-benzoxazin-4-one derivatives from the condensation reaction of anthranilic acids with heteroaromatic aldehydes in the presence of excess amount of acetic anhydride has been explored. The reactions proceed smoothly under ultrasound irradiation and without catalyst at 35 − 40°C to afford the title products in high yields. Springer Science+Business Media, Inc., 2011 acetic anhydride nationallicence N-acetyl-2-aryl-1,2-dihydro-4H-3,1-benzoxazin-4-one nationallicence anthranilic acid nationallicence heteroaromatic aldehyde nationallicence ultrasound nationallicence Azarifar D. Department of Chemistry, University of Bu-Ali Sina, 65178, Hamedan, Iran aut Sheikh D. Department of Chemistry, University of Bu-Ali Sina, 65178, Hamedan, Iran aut Chemistry of Heterocyclic Compounds Springer US; http://www.springer-ny.com 47/9(2011-12-01), 1128-1136 0009-3122 47:9<1128 2011 47 10593 https://doi.org/10.1007/s10593-011-0883-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10593-011-0883-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Azarifar D. Department of Chemistry, University of Bu-Ali Sina, 65178, Hamedan, Iran aut NATIONALLICENCE 700 1- Sheikh D. Department of Chemistry, University of Bu-Ali Sina, 65178, Hamedan, Iran aut NATIONALLICENCE 773 0- Chemistry of Heterocyclic Compounds Springer US; http://www.springer-ny.com 47/9(2011-12-01), 1128-1136 0009-3122 47:9<1128 2011 47 10593 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer