Editorial [Hot Topic: Heterocyclic Chemistry (Guest Editor: Jan Bergman)]

Organic chemistry promoted by indium metal and indium salts is of considerable current interest and a few reviews are available. In these reviews, however, applications to the field of heterocyclic chemistry is only scantily covered and the review "Indium Reagents in Heterocylic chemistry" by Dr. Subodh Kumar from the Department of Chemistry, Guru Nanok Dev University, Amritsar, India will, no doubt, be timely and useful. Ethyl ethoxymethylenecyanoacetate, EMCA, and diethyl ethoxymethylenemalonate, DEEM, are two useful reagents for the construction of heterocycles, for instance conversion of a monocyclic heterocycle to a bicyclic heterocycle. This chemistry has now been reviewed by Dr. Agnieska Kaczor from the Medical University of Lublin, Poland. Prof. Geza Stajer and Dr. Ferenc Csende from the Institute of Pharmaceutical Chemistry, University of Szeged, Hungary, have contributed the final two chapters dealing with synthetic approaches to isoindoles as well as 3-substituted isoindole-1-ones.