1. INTRODUCTION Indoline-2, 3-dione or indole-1H-2, 3-dione (Figure 1), commonly known
as isatin, is a well-known natural product found in plants of genus Isatis and in Couropita …

Isatins are well‐known carbonyl electrophiles which allow a vast number of reactions
initiated by nucleophilic attack on the C3 carbonyl group when used as starting materials …

A simple and efficient protocol for one-pot three-component coupling of isatoic anhydride,
amines, and aldehydes in water using magnetically recoverable Fe3O4 nanoparticles is …

Nitrogen-containing compounds are ubiquitous in nature and many of them are biologically
active (eg, 1, 2, 3, 4; Fig. 1). The nitrogen-containing units of these molecules play important …

Because of their definite or potential biological and pharmaceutical activities, spirooxindole
heterocycles have been widely studied, and there has occurred a research boom on routes …

A mild and facile method for the combinatorial synthesis of quinazolin-4-(1 H)-one
derivatives, containing simple 2, 2-disubstituted quinazolin-4-(1 H)-ones, spirocyclic …

A simple, facile, efficient and three-component procedure for the synthesis of spiro [indoline-
3, 4′-pyrazolo [3, 4-b] pyridine]-2, 6′(1′ H)-diones by the reaction of 4-hydroxycumarin …

Isatoic anhydride has attracted a great deal of attention in recent decades. A review of the
methods of preparation of all known quinazoline and quinazolinone derivatives is given …

Ethylenediamine diacetate (EDDA)-catalyzed one-pot syntheses of biologically interesting 2,
3-dihydroquinazolin-4 (1H)-ones and their spirooxindole derivatives from isatoic anhydride …

Amberlyst-15 has been identified as a green and reusable catalyst in the synthesis of spiro
2, 3-dihydroquinazolin-4 (1H)-ones under ultrasound irradiation at room temperature. The …