Sterically Strained Porphyrins—Influence of Core Protonation and Peripheral Substitution on the Conformation of Tetra-meso-, Octa-β-, and Dodeca-Substituted Porphyrin Dications

N-Methyl Derivatives of Highly Substitut

N-Methyl Derivatives of Highly Substituted Porphyrins – the Combined Influence of Both Core and Peripheral Substitution on the Porphyrin Conformation

✍ Senge, Mathias O. ;Kalisch, Werner W. ;Runge, Steffen 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 1006 KB

## Abstract __N__‐Methylation of the peripherally highly substituted octaethyltetraphenylporphyrin (1) with either methyl iodide or methyl triflate gave the respective mono‐, di‐, tri‐ and tetra‐__N__‐methylated derivatives. Use of methyl triflate under carfully controlled conditions often gave the