Stable Metal‐Phthalocyanines as Poison‐Resistant Catalysts in Homogeneous Catalysis: Reduction of Organic Compounds with NaBH₄

Abstract

The metal phthalocyanines MPc (M = VO, Mn, Fe, Co, Pd) related to vitamin B 12 are stable reduction catalysts having advantageous properties and also potential industrial applications. These compounds are soluble (MPc ⊖ ) during the reduction (with NaBH 4 ) and insoluble (MPc) under non‐reducing conditions. They enable selective reductions and are not, or rarely, poisoned by SH ⊖ , CN ⊖ , or I ⊖ . equation image