1-Aminoisoindole as a useful π-system elongation unit
作者:Taiji Akiyama、Hiroki Uoyama、Tetsuo Okujima、Hiroko Yamada、Noboru Ono、Hidemitsu Uno
DOI:10.1016/j.tet.2009.03.072
日期:2009.5
1-nitro derivatives in moderate yields. Reduction of a nitro to amino group was successfully performed by sodiumhydrosulfite in the case of ethyl 3-nitro-4,7-ethanoisoindole-1-carboxylate. The amino derivative was converted to benzylidenaminoisoindoles based on the retro Diels–Alder reaction. Their UV–vis spectra showed strong absorptions at 500–700 nm.
First synthesis of a series of core-modified tetrabenzoporphyrins
作者:Yusuke Shimizu、Zhen Shen、Tetsuo Okujima、Hidemitsu Uno、Noboru Ono
DOI:10.1039/b311879g
日期:——
Successful synthesis of a series of highly conjugated porphyrin analogues, including thia-, dithia- and oxathia-tetrabenzoporphyrins, and their optical properties are reported.
Thermal Behavior of Free-Base and Core-Modified Bicyclo[2.2.2]octadiene-Fused Porphyrins
作者:Hidemitsu Uno、Yusuke Shimizu、Hiroki Uoyama、Yousuke Tanaka、Tetsuo Okujima、Noboru Ono
DOI:10.1002/ejoc.200700711
日期:2008.1
Multistep thermal fragmentation of quadruply bicyclo[2.2.2]octadiene-fused porphyrins giving tetrabenzoporphyrins was examined in detail. After the first extrusion of an ethylene molecule from the porphyrin derivative, the opposite bicyclo[2.2.2]octadiene moiety preferentially underwent the second retro-Diels–Alder reaction to give an opp-dibenzoporphyrin derivative rather than an adj-dibenzoporphyrin
Organic semiconductor material and organic electronic device
申请人:MITSUBISHI CHEMICAL CORPORATION
公开号:US20030226996A1
公开(公告)日:2003-12-11
An organic semiconductor material comprising a compound which has a generalized porphyrin skeleton and which has a molecular structure such that the distance from the generalized porphyrin ring plane to the center of each atom forming the generalized porphyrin skeleton, is not more than 1 Å
Retro-Diels-Alder Approach to the Synthesis of π-Expanded Azuliporphyrins and Their Porphyrinoid Aromaticity
作者:Tetsuo Okujima、Tasuku Kikkawa、Haruyuki Nakano、Hiroshi Kubota、Nobumasa Fukugami、Noboru Ono、Hiroko Yamada、Hidemitsu Uno
DOI:10.1002/chem.201201399
日期:2012.10.1
Bicyclo[2.2.2]octadiene (BCOD) fused azuliporphyrins were synthesized by 3+1 porphyrin synthesis of azulitripyrranes with diformylpyrroles. Subsequent retro‐Diels–Alder reaction of the BCOD‐fused azuliporphyrins afforded azulibenzo‐, azulidibenzo‐, and azulitribenzoporphyrins 1–5. NMR and UV/Vis spectra, as well as nucleus‐independent chemical shift (NICS) calculations revealed that 1–5 and their diprotonated