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Cover Picture: Synthesis of Phenylacetylene Dendrimers Having Sterically Congested Diazo Units and Characterization of Their Photoproducts (Eur. J. Org. Chem. 14/2004)
Author(s) -
Itoh Tetsuji,
Maemura Toshiyuki,
Ohtsuka Yusuke,
Ikari Yoshiyuki,
Wildt Holger,
Hirai Katsuyuki,
Tomioka Hideo
Publication year - 2004
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/ejoc.200490028
Subject(s) - diazo , phenylacetylene , chemistry , dendrimer , steric effects , cover (algebra) , combinatorial chemistry , organic chemistry , catalysis , mechanical engineering , engineering
The cover picture shows a phenylacetylene dendrimer having 12 diazo units, from which a dodecakiscarbene is generated. Diazo functional groups are usually labile and hence cannot be used as building blocks to prepare more complicated poly(diazo) compounds. We have shown that a diphenyldiazomethane prepared to generate a persistent triplet diphenylcarbene is also stable and can be used as a building block to construct poly(diazo) compounds, which can generate high‐spin polycarbenes. Details are discussed in the article by H. Tomioka et al. on page 2991 ff.