2-Phenyl-2,3-dihydroquinazolin-4(1H)-one derivatives were synthesized for the first time in water under neutral conditions by the reaction of aldehyde, and anthranilamide mediated by beta-cyclodextrin in high yields. beta-Cyclodextrin can be recovered and reused with a small loss of catalytic activity. (C) 2012 Elsevier Ltd. All rights reserved.
Tandem supramolecular synthesis of substituted 2-aryl-2,3-dihydroquinazolin-4(1H)-ones in the presence of β-cyclodextrin in water
Substituted 2-aryl-2,3-dihydroquinazolin-4(1H)-ones were prepared for the first time in water under neutral conditions by the reaction of aniline, isatoic anhydride, and aldehyde mediated by beta-cyclodextrin in good yields. beta-Cyclodextrin can be recovered and reused with a little loss of catalytic activity. (C) 2012 Elsevier Ltd. All rights reserved.
Recyclable [Ce(l-Pro)2]2 (Oxa) used as Heterogeneous Catalyst: One-Pot Synthesis of 2,3-Dihydroquinazolin-4(1H)-ones in Ethanol
作者:Ramesh Katla、Rakhi Chowrasia、Caren da Silva、Aline de Oliveira、Beatriz dos Santos、Nelson Domingues
DOI:10.1055/s-0036-1590886
日期:2017.12
(Oxa) was used as a recyclableheterogeneouscatalyst under mild conditions for the preparation of 2-aryl-2,3-dihydroquinazolin-4(1H)-one derivatives. The one-pot protocol proceeds in ethanol using anthranilamide with several aldehydes at 50–55 °C. The catalyst can be recycled and reused three cycles without significant loss of catalytic activity. [Ce(l-Pro)2]2 (Oxa) was used as a recyclable heterogeneous