LE3 .A278 2021

2021

Ellis, Bobby

Acadia University

Bachelor of Science

Honours

Chemistry

Chemistry

Tetraarylstannanes (SnAr4) can be used as precursors for diarylstannylenes (SnAr2), which show promise for hydrogen activation. The syntheses of tetraarylstannane derivatives, R4Sn (where R= Ph, Mes, Mes*H, tBuC6H4, tol), were attempted using Grignard and substitution reaction. The synthesis of Mes*’Br, a very big bulky group, was attempted via a bromination reaction between Mes*H, Br2 and iron fillings. The bromination of Mes*H was done to obtain compounds that are bulky and stabilized, which will allow the removing of hydrogens. The synthesis of diaryl dichloride tin was attempted via a Kocheshov reaction with a 2:1 ratio between reactants. The ligand synthesis of Dipp2 DAB was done via a condensation reaction. Each product was purified by recrystallization, except Mes*’Br products was distilled. Products were characterized with 13C{1H} and 1H NMR spectroscopy. However, 119Sn{1H} NMR spectroscopy would be required to further confirm the synthesis of tetraarylstannanes and diaryl dichloride tin.

The author retains copyright in this thesis. Any substantial copying or any other actions that exceed fair dealing or other exceptions in the Copyright Act require the permission of the author.

https://scholar.acadiau.ca/islandora/object/theses:3586