Thermal Behavior of Bicyclo[2.2.2]octadiene-Installed Precursors for 2H-Anthra[2,3-c]pyrroles and Anthra[2,3-c]thiophene
摘要:
4,11-Ethano-4,11-dihydro-2H-anthra[2,3-c]pyrrole and 4,11-ethano-4,11-dihydroanthra[2,3-c]thiophene derivatives were prepared from the corresponding bicyclo[2.2.2]octadiene-fused five-membered heterocycles by the Diels-Alder reaction with in situ generated alpha, alpha'-dibromo-o-xylylene derivatives. Their thermogravimetric analyses showed evapolation without formation of 2H-anthra[2,3-c]pyrrole and anthra[2,3-c]thiophene derivatives under the atmospheric pressure.
Thermal Behavior of Bicyclo[2.2.2]octadiene-Installed Precursors for 2H-Anthra[2,3-c]pyrroles and Anthra[2,3-c]thiophene
摘要:
4,11-Ethano-4,11-dihydro-2H-anthra[2,3-c]pyrrole and 4,11-ethano-4,11-dihydroanthra[2,3-c]thiophene derivatives were prepared from the corresponding bicyclo[2.2.2]octadiene-fused five-membered heterocycles by the Diels-Alder reaction with in situ generated alpha, alpha'-dibromo-o-xylylene derivatives. Their thermogravimetric analyses showed evapolation without formation of 2H-anthra[2,3-c]pyrrole and anthra[2,3-c]thiophene derivatives under the atmospheric pressure.
Synthesis of π-conjugated asymmetric aza-BODIPYs via nitrosobicyclopyrroles
作者:Ryota Mori、Minenari Asakura、Yukinori Kobayashi、Hiromu Mashimo、Makoto Roppongi、Satoshi Ito
DOI:10.1016/j.tetlet.2022.153759
日期:2022.4
π-Conjugated aza-BODIPYs with absorption in the near-infrared region have attracted attention, but there are few reports of their synthesis. We report the synthesis and absorption properties of π-conjugated asymmetricaza-BODIPYs by nitrosation and retro-Diels-Alder reaction of bicyclo[2.2.2]octadiene-fused bicyclopyrroles. We also synthesized aza-BODIPY fused with [2.3]naphtho and [2.3]anthra structures
Synthesis and Characterization of Tetraanthroporphyrins
作者:Hiroko Yamada、Daiki Kuzuhara、Tetsuro Takahashi、Yusuke Shimizu、Keisuke Uota、Tetsuo Okujima、Hidemitsu Uno、Noboru Ono
DOI:10.1021/ol8008842
日期:2008.7.17
Linearly pi-expanded novel tetraanthroporphyrins with and without aromatic rings at the meso-positions were prepared quantitatively for the first time from the corresponding precursors by a retro-Diels-Alder reaction.
Thermal Behavior of Bicyclo[2.2.2]octadiene-Installed Precursors for 2H-Anthra[2,3-c]pyrroles and Anthra[2,3-c]thiophene
4,11-Ethano-4,11-dihydro-2H-anthra[2,3-c]pyrrole and 4,11-ethano-4,11-dihydroanthra[2,3-c]thiophene derivatives were prepared from the corresponding bicyclo[2.2.2]octadiene-fused five-membered heterocycles by the Diels-Alder reaction with in situ generated alpha, alpha'-dibromo-o-xylylene derivatives. Their thermogravimetric analyses showed evapolation without formation of 2H-anthra[2,3-c]pyrrole and anthra[2,3-c]thiophene derivatives under the atmospheric pressure.