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Synthetic Studies in Organised and Homogeneous Media

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Title Synthetic Studies in Organised and Homogeneous Media
 
Creator Hota, Sandip K
 
Subject Chemistry
 
Description Many reactions were performed in organized aqueous media. When the reactions were
performed in organic solvents, adequate precautions were taken e.g. dry solvents, ovendried
glasswares, positive pressure of nitrogen etc. Reaction at room temperature or ambient
temperature generally implies a temperature of 25°C. Some reagents were obtained from
commercial sources and used without purification. The solvents used were of technical
grade, and freshly distilled prior to use. 1H (300 MHz, 600 MHz) and 13C (75 MHz, 150
MHz) NMR spectra were recorded using CDCl3 as solvent and tetramethyl silane (TMS) as
internal standard on Bruker DPX 300 MHz and Bruker DRX 600 MHz NMR instruments at
ambient temperature. Chemical shifts are stated in parts per million in δ scales. COSY and
NOESY experiment have been carried out in order to assign the 1H spectra completely.
Infrared spectra were recorded on a JASCO-FTIR Model-410. Spectra were calibrated
against the polystyrene absorption at 1601 cm-1. IR spectra were measured using a KBr
pellet or in neat condition. Mass spectra were measured mostly in ESIMS (+) and some in
EIMS mode. DI-EIMS were recorded on a GCMS-Shimadzu-QP5050A and ESIMS were
done on a Waters Micromass Q-TOF microTM Mass Spectrometer. X-Ray crystallographic
data of single crystals were collected on Bruker Kappa Apex II with Mo-Kα radiation (λ =
0.71073A˚ ). Dynamic light scattering (DLS) was performed by Malvern Instruments
(Model: Nano ZS 80). Optical micrograph was taken at 10x magnification in a Nikon
ECLIPSE (Model: E200) microscope. The surfactants used were dodecyl benzene sulfonic
acid (DBSA), cetyl trimethyl ammonium bromide (CTAB), sodium dodecyl sulfate (SDS)
and polyoxyethylene(20) sorbitan monooleate (Tween 80). TLC was performed on pre-
coated plates (0.25 nm, silica gel 60 F254). Organic extracts were dried over anhydrous
sodium sulfate. Column chromatography and flash chromatography were carried out using
commercial grade silica gel (100–200 mesh or 230–400 mesh). PS and EA stand for
petroleum spirit (60–80°C) and ethyl acetate, respectively.
 
Date 2009
 
Type Thesis
NonPeerReviewed
 
Format application/pdf
 
Identifier http://www.eprints.iicb.res.in/1266/1/Thesis_All.pdf
Hota, Sandip K (2009) Synthetic Studies in Organised and Homogeneous Media. PhD thesis, Jadavpur University.
 
Relation http://www.eprints.iicb.res.in/1266/