Prospecting in Hückel-space: from hinokitiol to non-benzenoid organic electronics

21-Carba-23-oxaporphyrinoids and 21-oxo-21-carba-23-oxaporphyrinoids: macrocyclic π-conjugation involving the carbonyl moiety

Aromaticity of 21-oxo-21-carba-23-oxachlorin resulted from a predominant dipolar contributor. Nonaromaticity of 21-oxo-21-carba-23-oxaporphyrin reflects a participation of canonical aromatic and antiaromatic forms engaged in a peculiar “tug of war”.

Tropolone natural products

This review on natural products containing a tropolonoid motif highlights analytical methods applied for structural identification and biosynthetic pathway analysis, the ecological context and the pharmacological potential of this compound class.

The Nozoe Autograph Books Project: An Assessment

Bonding beyond Borders is a fitting title to the Nozoe Autograph Books project, as the books and their publication involved innumerable contributors from around the globe all in the spirit of personal collaboration. The editors of this project share details of how the project came into being and give their own personal assessment of what it has become and what it means.

Chemistry without bo(a)rders

Note from the Editor: Science, collegiality, travel without borders. Big smiles and warmth. Eternally youthful vigor. When I think of Tetsuo Nozoe, these are the images that immediately come to mind. When I think of the Nozoe Autograph Books, I also think of time. For 40 years, Nozoe carried with him his autograph books and collected his treasures which The Chemical Record is now publishing. Vladimir Prelog signed first when he was 47 and signed last when he was almost 80. Derek Barton signed first when he was 35 and signed last when he was almost 70. Time! I was fascinated by Eva Wille's recommendation that we publish an essay by Eva-Maria Tanzer, a young organic chemist with already a lifetime's experience in exploring chemical research in laboratories around the world. Tanzer brings to us a charming, even innocent perspective that embraces so much of Tetsuo Nozoe's ideals. We are privileged to include Tanzer's vision and her experiences in the collection of essays that accompany the Nozoe Autograph Books. Our contributors range in age and experiences, from the youthful Tanzer to the more mature (including myself!) as do the signatories in the autograph books. Tetsuo Nozoe would have beamed!--Jeffrey I. Seeman Guest Editor University of Richmond Richmond, Virginia 23173, USA E-mail: jseeman@richmond.edu.