Cyclisation reactions of some arene diazonium salts
General Material Designation
[Thesis]
First Statement of Responsibility
Daudpota, Abdul S.
.PUBLICATION, DISTRIBUTION, ETC
Name of Publisher, Distributor, etc.
Loughborough University of Technology
Date of Publication, Distribution, etc.
1978
DISSERTATION (THESIS) NOTE
Dissertation or thesis details and type of degree
Thesis (Ph.D.)
Text preceding or following the note
1978
SUMMARY OR ABSTRACT
Text of Note
A brief review of the dediazoniation of benzenediazonium salts and cyclisation reactions through 2,2'-positions of biphenyls is presented in order to understand and investigate the scope and mechanism of the Mascarelli reaction. It has been shown that 2-alkylbiphenyl-2'-yldiazonium salts cyclise under protic and aprotic conditions to give fluorene derivatives and, in the case where a nucleophilic counter-ion is present, products in which cyclisation has not occurred. A number of mechanistic schemes have been considered and investigated. The reactions carried out in the presence and absence of oxygen and also in the presence of bromotrichloromethane exclude pathways involving free radicals.