Synthesis under high hydrostatic pressure-a new method to prepare 5,10,15,20-tetrakis[4-(substituted amino)-2,3,5,6-tetrafluorophenyl]porphyrins

Ana T.P.C. Gomes, Patrícia C. Freire, Catarina R.M. Domingos, Maria G.P.M.S. Neves, José A.S. Cavaleiro, Filipe A. Almeida Paz, Jorge A. Saraiva, Augusto C. Tomé*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

5,10,15,20-Tetrakis(pentafluorophenyl)porphyrin reacts with primary alkylamines and heterocyclic amines, at 50°C and under high pressure (450 MPa), to produce the N-substituted tetraamino derivatives in high yields. Under similar conditions, the reaction with the bulky dibutylamine and dipentylamine affords the corresponding mono-substituted dialkylaminoporphyrins in 10% yield. This new protocol arises as a considerable improvement of the methods already known, which usually require high temperatures and are not effective when using secondary amines having long alkyl groups.
Original languageEnglish
Pages (from-to)1377-1389
Number of pages13
JournalJournal of Porphyrins and Phthalocyanines
Volume20
Issue number8-11
DOIs
Publication statusPublished - 1 Nov 2016
Externally publishedYes

Keywords

  • High pressure
  • Nucleophilic aromatic substitution
  • Pentafluorophenyl groups
  • Porphyrins
  • Primary amines
  • Secondary amines

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