Please use this identifier to cite or link to this item:
http://hdl.handle.net/2289/3671| Title: | Green chemistry approach to the synthesis of liquid crystalline materials |
| Authors: | Kumar, Sandeep Bisoyi, Hari Krishna Pal, Santanu Kumar |
| Issue Date: | Jan-2008 |
| Publisher: | Taylor & Francis |
| Citation: | Molecular Crystals and Liquid Crystals, 2008, Vol.480, p287. Paper presented at the International Liquid Crystal Conference 2006, Colorado, USA. |
| Abstract: | This article presents a simple, rapid, economic and environmentally acceptable microwave promoted “green chemistry” approach to the synthesis of some conventional and non-conventional liquid crystalline materials. Alkylation of 4'-hydroxy-4-biphenylcarbonitrile with various alkyl halides under microwave irradiation furnished alkoxycynobiphenyl-based calamitic liquid crystals in very high yield within one minute. Similarly, terminally-functionalized alkoxycyanobiphenyls and alkoxycyanobiphenyl dimers can also be prepared. Microwave irradiation of hexaalkoxytriphenylene in the presence of ionic liquids gives monohydroxy-pentaalkoxytriphenylene in about 30% yield. Novel imidazolium-based ionic liquid crystalline dimers can be easily prepared via quaternization reaction using microwaves. Classical reaction conditions failed to produce these dimers. |
| Description: | Restricted Access. |
| URI: | http://hdl.handle.net/2289/3671 |
| ISSN: | E-ISSN: 1563-5287 P-ISSN: 1058-725X |
| Alternative Location: | http://dx.doi.org/10.1080/15421400701826795 |
| Copyright: | 2008 Taylor & Francis |
| Appears in Collections: | Research Papers (SCM) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2008 MCLC V480 p287.pdf Restricted Access | Restricted Access | 192.56 kB | Adobe PDF | View/Open Request a copy |
Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.