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 …

Abstract Isatin, k1H-indole-2, 3-dione, kis a heterocyclic compound of significant importance
in medicinal chemistry. It is a synthetically versatile molecule, ka precursor for a large …

Spirocycles provide an exciting platform to develop and understand the reactivity and
selectivity for a wide variety of catalysts while affording diverse strategies to access …

All in a sequence: An organocatalyzed Morita–Baylis–Hillman (MBH)/bromination/[3+ 2]
annulation sequence for highly stereoselective syntheses of bis (spirooxindole) s featuring …

The copper (I)-catalyzed regioselective [3+ 2] cyclization of pyridines toward
alkenyldiazoacetates leading to functionalized indolizine derivatives is reported. A broad …

A chemo-and enantioselective [3+ 2] annulation of Morita–Baylis–Hillman carbonates of
isatins with propargyl sulfones was catalyzed by a β-ICD O-MOM ether 1c, affording …

Efficient construction of a challenging aza-spirocycloheptane oxindole scaffold is reported
through an unprecedented [4+ 3] cycloaddition reaction with bromo-substituted Morita …

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 …

In recent decades, a large number of reports related to the synthesis of N, O and S
containing heterocycles have appeared owing to a wide variety of their biological activity …

An organocatalytic [3+ 2]-annulation between isatin-derived Morita–Baylis–Hillman adducts
and cyclic sulfonimines has been developed in high yields with excellent enantio-and …