Synthesis and characterisation of novel rod-disc oligomers

Liquid Crystals

Volumn 35, Issue 5, 2008, Pages 521-525

  Pal, Santanu Kumar ^a   Kumar, Sandeep ^a   Seth, Jhumur ^a  

^a RAMAN RESEARCH INSTITUTE   (India)

Author keywords

Biaxial nematic; Rod disc oligomer; Rufigallol based oligomer

Indexed keywords

EID: 45749128241     PISSN: 02678292     EISSN: 13665855     Source Type: Journal    
DOI: 10.1080/02678290802051072     Document Type: Article

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36. 3 (1.3 g, 3.9 mol) were mixed in a small glass vial and loosely covered with a rubber septum. The mixture was heated in an unmodified household microwave oven at 360 W for 10 min (30 s x 20). The vial was taken out and water (10 ml) was added. Then the mixture was extracted with dichloromethane (3 x 10 ml). The combined organic extracts were washed with distilled water, dried over anhydrous sodium sulfate and evaporated to dryness under reduced pressure. The residue was then passed through a small column chromatography using 1:1 dichloromethane/petroleum ether as an eluent to afford 4a (300 x mg, 46%).
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