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Volumn 5, Issue 6, 2008, Pages 490-494

Oxalic acid dihydrate: A reusable and cost-effective catalyst for the synthesis of bis(indolyl)methanes under solvent-free conditions

Author keywords

Heterocycles; Indole; Oxalic acid; Solvent free

Indexed keywords


EID: 57349192204     PISSN: 15701786     EISSN: None     Source Type: Journal    
DOI: 10.2174/157017808785740516     Document Type: Article
Times cited : (8)

References (36)
  • 36
    • 57349137144 scopus 로고    scopus 로고
    • Melting points were measured on an Elecrtothermal 9100 apparatus and are uncorrected. Mass spectra were recorded on a FINNIGANMAT 8430 mass spectrometer operating at an ionization potential of 70 eV. 1H and 13C NMR spectra were recorded on a BRUKER DRX-300 AVANCE spectrometer at 300.13 and 75.47 MHz, respectively. IR spectra were recorded on a Bomem MB-Series FTIR spectrophotometer. General procedure for the synthesis of BIMs: Aldehyde or ketone (2 mmol, and indole derivative (1 mmol) were mixed with (COOH)2 2H2O (0.05 mmol) and placed in a round bottomed flask. The mixture was stirred at ambient temperature. After the completion of the reaction confirmed by TLC eluent: n-hexane/ethyl acetate: 3/1, cold H2O was added to the mixture and the precipitated product was separated by simple filtration. Finally, the crude product was recrystallized from ethyl acetate/n-hexane or ethanol. All of the products are known and c
    • 1H NMR spectra and melting point as comparing with those obtained from authentic samples. The purity of compounds obtained was determined by C,H,N analyses.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.