Chemistry: Recent submissions
Now showing items 436-440 of 897
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Preparation, structure and reactivity of some new types of stabilised phosphorus ylides
(University of St Andrews, 1996) - ThesisSixteen examples of the previously unknown β,γ,β'-trioxo phosphorus ylides have been prepared and fully characterised. Upon flash vacuum pyrolysis (FVP) these undergo clean loss of Ph₃PO selectively across the central ... -
Flash vacuum pyrolysis of some sulphonyl and sulphinyl stabilised phosphorous ylides
(University of St Andrews, 1990) - ThesisThe reaction between alkylidene or arylmethylene triphenyl phosphoranes and sulphonyl fluorides or sulphonic anhydrides has been used to give a variety of α-sulphonyl stabilised phosphorus ylides. Flash Vacuum Pyrolysis ... -
Some addition reactions of thiazoles
(University of St Andrews, 1965) - ThesisPossible synthetic approaches to the pyrrolo[2,1-b]thiazole system have been investigated involving the mode of addition of thiazoles to dimethyl acetylenedicarboxylate. A number of thiazoles were allowed to react with the ... -
Studies of derivatives of cyclopenta (d) thiazolium salts with reference to valence shell expansion in sulphur
(University of St Andrews, 1967) - Thesis -
Studies in the chemistry of pyrrolo (2, 1-b) thiazole
(University of St Andrews, 1963) - ThesisA number of synthetic approaches to the pyrrolo [2.1-b] this sole system have been investigated. Two useful preparative methods have been developed. The first is based on the cyclisation of the quaternary salts from 2-methyl- ...