Novel azo-substituted metallophthalocyanines (M: Co, Ni, Cu, Zn) bearing hydroxy, carbonyl, and methoxy groups: Synthesis and evaluation as pre-catalysts for the transfer hydrogenation of aldehydes and ketones
Yükleniyor...
Dosyalar
Tarih
2025
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
ELSEVIER
Erişim Hakkı
info:eu-repo/semantics/embargoedAccess
Özet
In this study, four novel metallophthalocyanine (MPc) compounds derived from phthalonitrile ligands incorporating o-vanillin were synthesized, characterized, and evaluated as pre-catalysts in the acetophenone and benzaldehyde transfer hydrogenation (TH) reactions. The molecular structures of the complexes were confirmed by FTIR and UV-Visible spectroscopy and elemental analysis. Among the complexes, copper phthalocyanine compound (5) exhibited the highest catalytic efficiency, promoting the acetophenone and benzaldehyde transfer hydrogenation reactions in propan-2-ol under inert conditions, and the corresponding alcohols have a 98 % conversion rate within 1 h (A1) and 99 % conversion within 6 h (K1). The results show that both the electronic effects of substituents on the phthalonitrile ligands and the central metal nature play key roles in determining the catalytic performance of the MPc complexes in TH reactions.
Açıklama
Anahtar Kelimeler
Phthalocyanine, Catalysis, o -Vanillin, Azo dyes, Transfer hydrogenation
Kaynak
JOURNAL OF MOLECULAR STRUCTURE
WoS Q Değeri
Q2
Scopus Q Değeri
Cilt
1355
