19407-55-7Relevant academic research and scientific papers
Divergent Synthesis of Quinazolin-4(3H)-ones and Tryptanthrins Enabled by a tert-Butyl Hydroperoxide/K3PO4-Promoted Oxidative Cyclization of Isatins at Room Temperature
Jia, Feng-Cheng,Zhou, Zhi-Wen,Xu, Cheng,Wu, Yan-Dong,Wu, An-Xin
, p. 2942 - 2945 (2016)
A synergetic tert-butyl hydroperoxide/K3PO4-promoted oxidative cyclization has been developed for the facile synthesis of various functionalized quinazolin-4(3H)-ones from commercially available isatins and amidine hydrochlorides at room temperature. The synthetic utility of this strategy was illustrated by the convenient synthesis of tryptanthrin derivatives via a self-dimerization of isatins under the same conditions.
HETEROCYCLIC COMPOUNDS AS ANTIBIOTIC POTENTIATORS
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Paragraph 1043, (2016/07/05)
The invention relates to heterocyclic compounds and their use as antibiotics and/or as antibiotic potentiators. The compounds may act as colistin potentiators and SOS inhibitors.
Quinazolinones from o-Aminobenzonitriles by One-Pot Sequential Selective Hydration/Condensation/Acceptorless Dehydrogenation Catalyzed by an Iridium Complex
Zhao, Wei,Liu, Pengcheng,Li, Feng
, p. 1523 - 1530 (2016/05/02)
A new strategy for the direct synthesis of quinazolinones from o-aminobenzonitriles was proposed and accomplished. In the presence of [Cp?IrCl2]2 (Cp?=pentamethylcyclopentadienyl), a variety of desirable products was obtained easily through the one-pot sequential selective hydration/condensation/acceptorless dehydrogenation. This protocol is highly attractive because it uses readily available starting materials, has a high atom efficiency, good to excellent yields, and minimal consumption of chemicals and energy. Notably, this research exhibited new potential for the development of transition-metal-catalyzed one-pot sequential reactions that involve acceptorless dehydrogenation.
