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Partial synthesis of chaksine
(1976)This thesis is concerned with the preliminary studies in the synthesis of a monoterpenoid alkaloid, chaksine, Ethyl 2-methylcyclohexanone-6-carboxylate (XI) was hydroxymethylated with formaldehyde to give Ethyl 2-me ... -
Photo-induced reactions of a photochromic fulgide in polymer matrices and in solvents
(1995)A photochromic fulgide, coimnonly known as Aberchrome 540, is amber in its ring-opened E (see document) dimethyl -3- furylethylidene) (isopropylidene) succinic anhydride] and z (see document) furylethylidene) (isopropylidene) ... -
Photolysis of para-substituted styrene polymers
(1977)This thesis describes the photolysis of para-substituted styrene polymers. Poly(vinylacetophenone), poly(p-bromostyrene), poly(p-chlorostyrene), poly(p-fluorostyrene), poly(p-isopropylstyrene), poly(p-methoxystyrene), ... -
Photolysis of poly-acyl styrene polymers
(1989)The following is a study of the long wave (wavelength >300 nm) photolysis of a series of poly acyl styrenes, in particular, poly-p-acetyl-styrene (PPAS), polyp- propionyl-styrene (PPPS), poly-o-acetyl-styrene (POAS), ... -
Reactions of Co(II) with sodium cyanotrihydroborate in the presence of a series of bidentate and some monodentate phosphines
(1981)The reactions between Co(C10[subscript4])[subscript2].6H[subscript2]O or CoCl[subscript2].6H[subscript2]O, NaBH[subscript3]CN and some monodentate (PPh[subscript3] and Pcy[subscript3]) and a series of bidentate phosphines ... -
Reactions of Ni (II) with sodium cyanotrihydroborate in presence of some bidentate phosphines
(1982)Cyanotrihydroborate-transiton metal ion chemistry has been reviewed. -
Reactions of Ni(II) with NaBh4 and NaBh3 CN in the presence of mono-and bidentate phosphines under CO atmosphere
(1988)Phosphine-substituted carbonyl complexes of Ni have been prepared. The reaction between NiC12.6H20, NaBH4 or NaBH3CN and either PPh3 or a series of phosphines of the type Ph2P-(CH2)n-PPh2 (n=1-5) and also cis-dppe under ... -
Reactions of sodium tetrahydroborate with metal ions in the presence of nitrogen donor ligands
(1977, c197)The work described in this thesis is part of an ongoing effort in these laboratories to determine in more detail how a variety of factors, particularly the nature of added ligands, affects the type of products and the ... -
Reactivity and mechanistic study of the Sonogashira coupling and Grignard-Sonogashira coupling reactions
(2002)The interest in studying enediyne systems was stimulated by the discovery of anti-cancer agents containing enediyne functionalities, such as esperamicin and dynemicin. These compounds have potential for use as anti-tumour ... -
Reactivity study of the palladium cross-coupling synthesis of enediynes
(1999)A reactivity study looking at various aspects of the palladium catalyzed (Sonogashira) reaction for die synthesis of enediynes was performed. Alkynes were coupled to 1,2- dichloro-, 1,2-dibromo- and 1,2-diiodobenzene. ... -
Relaxation processes in polystyrene matrices
(1977)Dielectric absorption of aromatic and aliphatic molecules containing the rotatable substituent group and of some analogous rigid molecules in $olutions of polar solutes dispersed in an atactic polystyrene matrix are ... -
Relaxation processes of polar molecules in some organic glasses
(1982)Dielectric absorption studies of a variety of polar solutes containing rotatable groups and of some analogous rigid molecules dispersed in (i) an atactic polystyrene matrix, (ii) glassy o-terphenyl and polyphenyl ether ... -
Some dielectric and spectroscopic studies on hydrogen bonding
(1984)Dielectric relaxation studies were carried out principally on some hydroxy compounds (e.g., phenols) and some carboxylic acids in polystyrene (PS) matrices and, in some cases, in compressed solids (CS). The hydroxy compounds ... -
Some dielectric studies
(1969)Two methods of approach are current in the literature for the interpretation of dielectric relaxation. One is that due to Debye which assumes that the relaxation process has its origin in the retardation of molecular ... -
Some dielectric studies of molecular and intramolecular motions
(1978)Dielectric relaxation studies of a series of polar diaryl molecules and of some analogous rigid molecules dispersed in atactic polystyrene and poly(vinyltoluene) have been carried out. Preparation of both polymer matrices ... -
Some dielectric studies of molecular and intramolecular relaxation processes
(1984)Dielectric relaxation studies of some potential systems involving molecular interaction particularly intermolecular and/or intramolecular hydrogen bonding as well as of some related molecules have been carried out in ... -
Some relaxation studies of molecular and intramolecular motions in glassy o-terphenyl
(1982)In this work, the results of dielectric studies carried out on a number of molecules of the general form y [symbol] x are presented. These molecules have been studied mainly in two forms: as solutions of glassy o-terphenyl, ... -
Some ring expansions and related reactions of the phosphole system
(1970)The chemistry of simple phosphole derivatives is comprehensively reviewed to the early part of 1970. Using 1,2,5-triphenylphosphole and some of its derivatives as starting materials, several ring expansion and related ...