Calix[4]quinones. Part 4: The ClO2 oxidation of calix[4]arene dialkyl ethers

Tetrahedron

Volumn 62, Issue 25, 2006, Pages 6082-6089

  Lin, Yu Lung ^a   Yu, Tzer Shun ^a   Wang, Wen You ^a   Lin, Lee Gin ^a  

^a CHINESE CULTURE UNIVERSITY   (Taiwan)

Author keywords

Calix 4 arene; Calix 4 quinone; Chlorine dioxide oxidation; Conformational interconversion

Indexed keywords

25,27 DIALLYLOXY 26,28 CALIX[4]DIQUINONE; 25,27 DIBENZYLOXY 26,28 CALIX[4]DIQUINONE; 25,27 DIBUTOXY 26,28 CALIX[4]DIQUINONE; 25,27 DIPROPOXY 26,28 CALIX[4]DIQUINONE; CALIX[4]ARENE DIETHYL ETHER; CALIX[4]DIQUINONE DIALKYL ETHER DERIVATIVE; CHLORINE DIOXIDE; ETHER DERIVATIVE; QUINONE DERIVATIVE; UNCLASSIFIED DRUG;

ARTICLE; COLUMN CHROMATOGRAPHY; EQUILIBRIUM CONSTANT; OXIDATION; PRIORITY JOURNAL; ROOM TEMPERATURE;

EID: 33646564968     PISSN: 00404020     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tet.2006.03.110     Document Type: Article

References (15)

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10. We thank Ms. S.-L. Huang of NSC Instrumental Center in Taipei for taking all the high field NMR measurements.
11. All the kinetic studies were preformed on JOEL DMX-200 WB spectrometer. Based on the data from Table 1, the error in the true value of each integral ratio was estimated to be less than 3%. Hence, the inaccuracy of the K calcd. value was estimated to be less than 6%.
12. 254 plates (absorbent thickness 0.2 mm).
13. 8, 29.70 g, 0.25 mol in 500 mL of deionized water). The solution was then stored in a brown bottle at 0 °C prior to being used.
14. 13C NMR spectrum for compounds 6 and 7, the task was achieved by marking all the identical signals from both spectra, and then assigning the lower intensity peaks as the signal arose from the converted compound.
15. All the new compounds, which were submitted for Elemental Analysis (EA), were dried at 120 °C under vacuum for 48 h prior to the analysis. If the analysis value was different from the calculated value, the sample was dried at 140 °C under vacuum for 48 h prior to another analysis. The drying period will be increased further, if the sample still received a different EA value from the theoretical value. The procedure was continued until a constant EA value was attained.