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Volume 14: Six-Membered Hetarenes with One Chalcogen |
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Introduction by
Prof. Jim Thomas (Volume Editor): |
| This volume of Science of Synthesis is concerned with six-membered hetarenes with
one chalcogen, i.e. pyrylium salts and pyranones together with their sulfur, selenium,
and tellurium analogues. As with other volumes of Science of Synthesis, it is the synthesis
of these hetarenes which is the dominant topic; their chemistry is covered only when relevant
to their synthesis, or in a few instances where it leads to generally useful synthetic
procedures, e.g. the Diels–Alder chemistry of pyran-2-ones. |
| The chemistry of pyrylium salts and pyranones has been studied for a very long time,
indeed since the beginning of modern organic chemistry. Hence, many of the references
included in this volume date back to fairly early work, although the literature coverage
continues up to the end of 2002. However, both pyranones and pyrylium salts retain considerable
industrial interest up to the present day, the former because of their biological
activities and the latter owing to their use as dyes. So despite their age, the compound
classes covered in this volume are of considerable contemporary interest and are likely
to remain so for many years to come. |
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