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Full-Text Articles in Physical Sciences and Mathematics
A Study Of The Solvolysis Reactions Of Tetrahydrofurfuryl Tosylate, Rebecca Centko '00
A Study Of The Solvolysis Reactions Of Tetrahydrofurfuryl Tosylate, Rebecca Centko '00
Honors Projects
The solvolysis of epoxycarbinyl substrates 1 has been the subject of several mechanistic studies. In spite of these investigations, it has not been established whether these solvolysis reactions proceed with anchimeric assistance from the epoxide oxygen and involve an oxabicyclobutonium ion intermediate or whether unassisted solvolysis occurs. Conflicting data in the literature suggest that the ability of the epoxide oxygen to provide anchimeric assistance is dependant upon structural and electronic features of the epoxycarbinyl substrate in question. The aim of this project was to study the nucleophilic substitution reactions of tetrahydrofurfuryl and tetrahydropyranyl sulfonates 2a and 2b as well as …
A Systematic Study Of The Correlations Between Meteorite Impacts And Soot Formation, Susanna L. Widicus '00
A Systematic Study Of The Correlations Between Meteorite Impacts And Soot Formation, Susanna L. Widicus '00
Honors Projects
A massive extinction of more than 50 percent of existing life forms on Earth occurred 65 million years (Ma) ago. This event is marked in the geological record by the Cretaceous-Tertiary (KT) boundary and corresponds to the Chicxulub meteorite impact in the Yucatan Peninsula. Since 1985, large quantities ofreduced elemental carbon in the form of characteristic spheroidal clusters of soot have been found in twelve KT boundary sites from across the globe. Because ofthe wide geographic distribution ofthese sites, the data was interpreted to indicate that deposition ofsoot was a global phenomenon. The source of this global soot layer is …