NOPR Collection:http://nopr.niscpr.res.in/handle/123456789/87772026-10-10T08:45:55Z2026-10-10T08:45:55ZPhase transfer catalyzed synthesis under ultrasonic irradiation and bioactivity of <i>N<sup> </sup></i>'-(4, 6-disubstituted-pyrimidin-2-yl)- <i>N</i>-(5-aryl-2-furoyl)thiourea derivativesKe, Shao-YongWei, Tai-BaoXue, Si-JiaDuan, Li-PingLi, Jing-Zhihttp://nopr.niscpr.res.in/handle/123456789/91922010-06-02T16:31:56Z2005-09-01T00:00:00ZTitle: Phase transfer catalyzed synthesis under ultrasonic irradiation and bioactivity of <i>N<sup> </sup></i>'-(4, 6-disubstituted-pyrimidin-2-yl)- <i>N</i>-(5-aryl-2-furoyl)thiourea derivatives
Authors: Ke, Shao-Yong; Wei, Tai-Bao; Xue, Si-Jia; Duan, Li-Ping; Li, Jing-Zhi
Abstract: Ten new <i>N</i>'-(4, 6-disubstituted-pyrimidin-2-yl)-<i>N</i>-(5-aryl-2-furoyl)thioureas
have been synthesized using PEG-400 as solid-liquid phase transfer catalyst
under ultrasonic irradiation. Their structures were exactly confirmed by IR, <sup>1</sup>H
NMR and elemental analysis. The preliminary biological tests show that compound
<b>7b</b> has better inhibitory activities against root and stalk of
dicotyledon plant (such as <i>Amaranthus retroflexus</i> <i>L.</i>) in higher concentration.
Page(s): 1957-19602005-09-01T00:00:00ZMicrowave induced solvent – free synthesis of 1-aryl-2-(1<i>E</i>)-arylvinyl- 4-arylmethylene-2-imidazolin-5-onesMaruthikumar, T VenkataReddy, V PrabhakarRao, P Hanumanthahttp://nopr.niscpr.res.in/handle/123456789/91912010-06-01T16:31:36Z2005-09-01T00:00:00ZTitle: Microwave induced solvent – free synthesis of 1-aryl-2-(1<i>E</i>)-arylvinyl- 4-arylmethylene-2-imidazolin-5-ones
Authors: Maruthikumar, T Venkata; Reddy, V Prabhakar; Rao, P Hanumantha
Abstract: A microwave – assisted
synthesis of the title compounds under solvent-free conditions is described.
The yields and reaction time period are noticeably improved in comparison with
conventional methods.
Page(s): 1931-19322005-09-01T00:00:00ZDirect esterification of carboxylic acids with <i style="">p</i>-cresol catalysed by acid activated Indian bentoniteVijayakumar, BIyengar, PushpaNagendrappa, GopalpurPrakash, B S Jaihttp://nopr.niscpr.res.in/handle/123456789/91902010-06-01T16:31:33Z2005-09-01T00:00:00ZTitle: Direct esterification of carboxylic acids with <i style="">p</i>-cresol catalysed by acid activated Indian bentonite
Authors: Vijayakumar, B; Iyengar, Pushpa; Nagendrappa, Gopalpur; Prakash, B S Jai
Abstract: Acid activated Indian
bentonite (AAIB) catalyst is used for the first time to esterify various
carboxylic acids with <i style="">p</i>-cresol in
average to excellent yields. Optimisation studies have been carried out for <i style="">p</i>-cresyl stearate synthesis. The
catalyst is recoverable and recyclable.
Page(s): 1950-19532005-09-01T00:00:00ZAnthraquinone glycoside from stem bark, fatty acids and sterols from seeds of <i>Cassia reingera</i>Ledwani, LalitaSingh, Mukhtarhttp://nopr.niscpr.res.in/handle/123456789/91892010-06-03T16:31:15Z2005-09-01T00:00:00ZTitle: Anthraquinone glycoside from stem bark, fatty acids and sterols from seeds of <i>Cassia reingera</i>
Authors: Ledwani, Lalita; Singh, Mukhtar
Abstract: From the bark of <i>Cassia
reingera</i> 1,5,6-trihydroxy-3-methyl-anthraquinone-8-O-<img src='/image/spc_char/alpha.gif' border=0>-L-glucoside has been isolated and its
structure elucidated with the help of chemical studies and spectral data. The
dyeing property of crude anthraquinone has been studied to develop variety of
shades on wool by using different mordants. Sterols and fatty acids have been
isolated from the seeds of <i>Cassia reingera</i> and are identified by using
GLC techniques by comparison with authentic sample.
Page(s): 1970-19712005-09-01T00:00:00Z