The next article includes the description of the rich chemistry of phosphinines, including azaphosphinines. The sixth article deals with synthetic approaches to different types of 1- heterophosphacyclanes, including four-, five-, and six-membered P-heterocycles. The next two articles cover the chemistry of phosphorus containing mac- cycles. The phosphorus containing calixarenes have attracted much attention in recent years due to their various functions such as metal cations binding, catalysis, molecular recogination, and bioactivity. Likewise, other phosphorus-containing macrocycles, cryptands, and dendrimers find various uses in analytical chemistry and biochemistry. We hope to include the following articles in the second volume on phosphorous heterocycles: Diazaphospholes Selected phosphorous heterocycles containing a stereogenic phosphorus Heterophenes carrying phosphorus functional groups as key structures The synthesis and chemistry of the phospholane ring system Synthesis and bioactivity of 2,5-dihydro-1,2-oxaphosphole-2-oxide derivatives Recent developments in the chemistry of N-heterocyclic phosphines. I would be failing in my duty if I do not express my sincere thanks to the people at Springer, particularly Ms. Birgit Kollmar-Thoni and Ms. Ingrid Samide, for coordinating the project with great dedication.

Anellated Azaphospholes

Biological Activity of Aminophosphonic Acids and Their Short Peptides
Phosphinine Derivatives and their Use as Versatile Intermediates in P-Heterocyclic Chemistry
Spiro- and Tricyclic Phosphoranes with Six- and Higher-Membered Rings
The Chemistry of Phosphinines
Synthetic Approaches to 1,2-Heteraphosphacyclanes
Phosphorus-Containing Calixarenes
From Phosphorus-Containing Macrocycles to Phosphorus-Containing Dendrimers.