Synthesis of Flavans :One-Pot Synthesis of Flavans From 4-Methylcoumarins
作者:Vijayendra P. Kamat、Ratnakar N. Asolkar、Janardan K. Kirtany
DOI:10.1080/00397919808004523
日期:1998.12
Abstract 4-Methylcoumarins (2), obtained by condensation of suitable phenols (1) with ethyl acetoacetate in the presence of sulfuric acid, lead directly to flavans (3) when refluxed with sodium hydroxide and ethanediol.
Recyclable cellulose nanocrystal supported Palladium nanoparticles as an efficient heterogeneous catalyst for the solvent-free synthesis of coumarin derivatives via von Pechmann condensation
作者:Atieh Mirosanloo、Daryoush Zareyee、Mohammad A. Khalilzadeh
DOI:10.1002/aoc.4546
日期:2018.12
Palladium nanoparticles (CNC‐AMPD‐Pd) as a novel bio supported nanocatalyst was prepared and characterized by ICP‐AES, FT‐IR, XRD, SEM, TEM, TGA and EDX techniques. The nanocatalyst demonstrated outstanding performance in Pechmann condensation between different substituted phenols and ethyl acetoacetate to obtain coumarin derivatives in good to excellent yields. The catalyst is easily recycled and reused
Raju, B. China; Babu, T. Hari; Rao, J. Madhusudana, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2009, vol. 48, # 1, p. 120 - 123
作者:Raju, B. China、Babu, T. Hari、Rao, J. Madhusudana
DOI:——
日期:——
Derivatives of acetoacetic acid. Part VIII. The synthesis of coumarins from aryl acetoacetates
作者:R. N. Lacey
DOI:10.1039/jr9540000854
日期:——
Flue-cured Tobacco. III. Solanachromene and α-Tocopherol