(from preface)

Volume 45 of Advances in Heterocyclic Chemistry contains five contributions, all of which break new ground for this series. In the first article, Fujita and Nagao describe the use of heterocycles for the induction of chirality. This
contribution represents an example of the way in which our subject is making itself increasingly felt throughout the whole field of chemistry. The second article, by Tisler, covers heterocyclic quinones, including the many classes in which a heterocycle is fused to a 1,2- or 1,4-benzoquinone ring.
In the third article, Porter describes the chemistry of thiophenium salts and ylids, to which he has contributed extensively. The chemistry of 1,4-diazocines is presented by Perlmutter; this article follows an earlier review by the same author on azocines in Volume 31 of Advances in Heterocyclic Chemistry. The final article of this volume, and the second contribution from Japan, is by Tsuge and Kanemasa and deals with recent advances in azomethine ylide chemistry.
The cumulative index updates, as announced in the preface to Volume 40, will cover Volumes 41-45 and will appear in Volume 46. This will prevent a delay in the publication of Volume 45.