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Ring size selective synthesis of meso-aryl expanded porphyrins

✍ Scribed by Ryuichiro Taniguchi; Soji Shimizu; Masaaki Suzuki; Ji-Young Shin; Hiroyuki Furuta; Atsuhiro Osuka


Book ID
104253215
Publisher
Elsevier Science
Year
2003
Tongue
French
Weight
106 KB
Volume
44
Category
Article
ISSN
0040-4039

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✦ Synopsis


meso-Aryl expanded porphyrins were prepared in a ring size selective manner from methanesulfonic acid-catalyzed reaction of dipyrromethane and tripyrromethane with aryl aldehydes.


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## Abstract Acid‐catalyzed condensation of __meso__‐pentafluorophenyl dipyrromethane **1** (100 mM) and pentafluorobenzaldehyde **2** (100 mM) at 0 Β°C gave a series of expanded porphyrins with even number of pyrrolic subunits up to octadecaphyrin(1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1) **18** in impro