A facile and highly efficient transfer hydrogenation of ketones and aldehydes catalyzed by palladium nanoparticles supported on mesoporous graphitic carbon nitride

NİŞANCI B., DAĞALAN Z.

JOURNAL OF CHEMICAL RESEARCH, cilt.44, ss.14-19, 2020 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 44
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1177/1747519819883792
  • Dergi Adı: JOURNAL OF CHEMICAL RESEARCH
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, Metadex
  • Sayfa Sayıları: ss.14-19
  • Anahtar Kelimeler: graphitic carbon nitride, Pd nanoparticles, reusable catalyst, transfer hydrogenation, SELECTIVE REDUCTION, AMMONIA BORANE, HETEROGENEOUS CATALYST, ALLOY NANOPARTICLES, WATER, DEHYDROGENATION, MILD, COMPLEXES, AMINATION, SOLVENT
  • Atatürk Üniversitesi Adresli: Evet

Özet

A novel transfer hydrogenation methodology for the reduction of ketones (14 examples) and benzaldehyde derivatives (12 examples) to the corresponding alcohols using Pd nanoparticles supported on mesoporous graphitic carbon nitride (mpg-C3N4/Pd) as a reusable catalyst and ammonia borane as a safe hydrogen source in an aqueous solution MeOH/H2O (v/v = 1/1) is described. The catalytic hydrogenation reactions were conducted in a commercially available high-pressure glass tube at room temperature, and the corresponding alcohols were obtained in high yields in 2-5 min. Moreover, the presented transfer hydrogenation protocol shows partial halogen selectivity with bromo-, fluoro-, and chloro-substituted carbonyl analogs. In addition, the present catalyst can be reused up to five times without losing its efficiency, and scaling-up the reaction enables alpha-methylbenzyl alcohol to be produced in 90% isolated yield.