Ultrasound-assisted Synthesis of Azlactone and its Reactions with Nucleophiles
作者:Boris V. Paponov、Sergey V. Lvov、Ekaterina V. Ichetovkina、Ilya A. Panasenko、Stepan G. Stepanian
DOI:10.1016/j.mencom.2012.09.016
日期:2012.9
4-(2-Oxoindolin-3-ylidene)-2-phenyl-5(4H)-oxazolone (azlactone) was synthesized as a mixture of E- and Z-isomers by ultrasound-assisted Erlenmeyer-Plochl reaction between isatin and N-benzoylglycine. Treatment of azlactone with nucleophiles causes opening of its oxazolone moiety.
Synthesis and evaluation of some new spiro indoline-based heterocycles as potentially active antimicrobial agents
Several new spiro indoline-based heterocycles were synthesized by prior preparation of the 4-(2'-oxo-indol-3'-ylidene)-oxazol-5-one derivatives and subsequent reaction of the produced indol-3-ylidene based heterocycles with activated nitrile reagents. The obtained products were allowed to react with hydrazine hydrate in alcoholic basic to give the target compounds. Structure of these products was confirmed