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Pregled bibliografske jedinice broj: 873459

Sulfuric acid and Amberlyst-H+ catalyzed condensation reactions of renewable keto acids with paraformaldehyde: synthesis of a new dispiro bis-lactone ring system 2, 9, 13-trioxadispiro[4.1.4.3]tetradecane-3, 6, 10-trione


Amarasekara, Ananda S.; Ha, Uyen; Fonari, Marina S.; Bejagam, Shabari Nath; Margetić, Davor
Sulfuric acid and Amberlyst-H+ catalyzed condensation reactions of renewable keto acids with paraformaldehyde: synthesis of a new dispiro bis-lactone ring system 2, 9, 13-trioxadispiro[4.1.4.3]tetradecane-3, 6, 10-trione // RSC Advances, 7 (2017), 23917-23923 doi:10.1039/c7ra02303k (međunarodna recenzija, članak, znanstveni)


Naslov
Sulfuric acid and Amberlyst-H+ catalyzed condensation reactions of renewable keto acids with paraformaldehyde: synthesis of a new dispiro bis-lactone ring system 2, 9, 13-trioxadispiro[4.1.4.3]tetradecane-3, 6, 10-trione

Autori
Amarasekara, Ananda S. ; Ha, Uyen ; Fonari, Marina S. ; Bejagam, Shabari Nath ; Margetić, Davor

Izvornik
RSC Advances (2046-2069) 7 (2017); 23917-23923

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Organic synthesis, condensation, lactone

Sažetak
The sulfuric acid and Amberlyst-H+ catalyzed condensation reactions of renewable feedstock levulinic acid with paraformaldehyde under neat conditions at 80 °C gives 2, 9, 11, 14-tetraoxadispiro[4.1.5.3]pentadecane-3, 6-dione in 91–93% yield, in which the structure was confirmed by single crystal X-ray crystallography. A similar condensation reaction between 4-ketopimelic acid and paraformaldehyde at 80 °C gives 2, 9, 13-trioxadispiro[4.1.4.3]tetradecane-3, 6, 10-trione. This new dispiro bis-lactone was found to composed of a 1.6:1 mixture of isomers with planes of symmetry bisecting the tetrahydro-2H-pyran-4-one rings through the carbonyl groups.

Izvorni jezik
Engleski

Znanstvena područja
Kemija



POVEZANOST RADA


Ustanove
Institut "Ruđer Bošković", Zagreb

Autor s matičnim brojem:
Davor Margetić, (161124)

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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