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Cover Picture: Direct Arylation of Porphyrins with π‐Extended Aryl Bromides under Ligand‐free Fagnou–Hartwig Conditions (Asian J. Org. Chem. 4/2013)
Author(s) -
Yamamoto Yutaro,
Tokuji Sumito,
Tanaka Takayuki,
Yorimitsu Hideki,
Osuka Atsuhiro
Publication year - 2013
Publication title -
asian journal of organic chemistry
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.846
H-Index - 44
eISSN - 2193-5815
pISSN - 2193-5807
DOI - 10.1002/ajoc.201390009
Subject(s) - chemistry , aryl , porphyrin , phosphine , palladium , ligand (biochemistry) , transition metal , combinatorial chemistry , catalysis , organic chemistry , receptor , biochemistry , alkyl
Transition‐metal‐catalyzed direct CH arylations have emerged as ideally efficient transformations in organic synthesis. In their Full Paper on page 320 ff, Atsuhiro Osuka et al. report palladium‐catalyzed, β‐selective, direct arylations of 5,10,15‐triarylporphyrins with π‐extended aryl bromides, such as 2‐bromonaphthalene and 9‐bromoanthracene. The β‐arylation of the porphyrins proceeds without any additional phosphine ligands and is, thus, an efficient and user‐friendly arylation of the porphyrin core.