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Volumn , Issue 20, 2007, Pages 3107-3112

An efficient and convenient protocol for the synthesis of novel 12-aryl- or 12-alkyl-8,9,10,12-tetrahydrobenzo[a]xanthen-11-one derivatives

Author keywords

2 naphthol; Aldehydes; Cyclic 1,3 dicarbonyl compounds; NaHSO4 SiO2; Three component condensation reaction; Xanthene

Indexed keywords

2 NAPHTHOL; ALDEHYDE DERIVATIVE; CARBONYL DERIVATIVE; XANTHENE DERIVATIVE;

EID: 37749004900     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-2007-990922     Document Type: Article
Times cited : (125)

References (46)
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  • 27
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  • 46
    • 37749022216 scopus 로고    scopus 로고
    • General Procedure for the Synthesis of 12-Aryl- or 12-Alkyl-8,9,10,12-tetrahydrobenzo[a]xanthen-11-one Derivatives: NaHSO4·SiO2 (100 mg) was added to a mixture of 2-naphthol (1.0 mmol, aldehyde (1.0 mmol) and dimedone (1.2 mmol) in DCE (5 mL, The mixture was stirred at reflux conditions and the reaction was monitored by TLC. After completion of the reaction, the mixture was filtered. The filtrate was concentrated and the residue was purified by column chromatography (silica gel, 3% EtOAc in hexane) to afford the pure 12-aryl- or 12-alkyl-8,9,10,12-tetrahydrobenzo[a]xanthen-11-one derivative. Spectral data of some representative products are given below: Compound 3b: 1H NMR (200 MHz, CDCl3, δ, 7.86 (dd, J, 2.0, 8.0 Hz, 1 H, 7.75 (dd, J, 2.0, 8.0 Hz, 2 H, 7.11-7.46 (m, 7 H, 5.62 (s, 1 H, 2.63 (s, 2 H, 2.31 (d, J, 12.0 Hz, 1 H, 2.20 d, J, 12.0 Hz, 1 H
    • +..


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.