Use this URL to cite or link to this record in EThOS:
Title: Some reactions of phosphorus ylids
Author: Walker, Brian John
Awarding Body: University of Leicester
Current Institution: University of Leicester
Date of Award: 1966
Availability of Full Text:
Access from EThOS:
Access from Institution:
Both the methods of preparation, and the reactions, of phosphorus ylids are reviewed. The reactions of activated triple bonds with phosphorus ylids are studied and shown to give rearranged products, probably via a four-membered cyclic transition state. A brief outline of the mechanism of the Wittig reaction is given, and reactionsof intermediate betaines in the Wittig reaction, other than olefin formation, are studied. The reaction of phosphines with epoxides is used to demonstrate betaine dissociation and rearrangement. Following a review of abnormal quaternisation reactions of activated alkyl halides, the reaction of triphenylphosphine with 1-bromo-nitroalkanes, to give a-hydroxyimino- alkyl phosphonium salts, is discussed. A brief review of the reactions of aldehydes and ketones with trivalent phosphorus compounds is followed by a more detailed study of the reaction of aminophosphines with aldehydes and ketones to give rearranged products.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available