dc.contributor.author |
Sheth, Pravinchandra R. |
|
dc.contributor.other |
Youngstown State University, degree granting institution. |
|
dc.contributor.other |
Youngstown State University. Department of Chemistry. |
|
dc.date.accessioned |
2020-08-04T20:47:59Z |
|
dc.date.available |
2020-08-04T20:47:59Z |
|
dc.date.issued |
1973 |
|
dc.identifier.other |
907473317 |
|
dc.identifier.other |
b1678825 |
|
dc.identifier.uri |
https://jupiter.ysu.edu/record=b1678825 |
|
dc.identifier.uri |
http://hdl.handle.net/1989/15644 |
|
dc.description |
vii, 65 leaves : illustrations ; 29 cm
Thesis M.S. Youngstown State University 1973.
Includes bibliographical references (leaves 63-65). |
en_US |
dc.description.abstract |
A study was made of the reversible ring-opening reactions of epoxides with halide ions in methanol at 25 C. The reactions produce halohydrlns and methoxide ion. The concentration of methoxide ion was determined by a spectrophotometric technique utilizing Its reversible reaction with p-nitrophenol. The rate and equilibrium constants for the reactions of chloride, bromide and Iodide Ions with propylene oxide were evaluated. The equilibrium constants for the reactions of bromide ion with 1-oxasplro[2,5] octane and with l,2-epoxy-2,3-dlmethylbutane were also evaluated. The results showed that alkyl and gem-dialkyl substitution stabilized the epoxide ring toward opening by halide Ions. The extra ring stability obtained by substituting an isopropyl substituent for a hydrogen
substituent amounted to at least 3.6 kcal. The results were discussed in terms of possible explanations for the stabilizing effect of alkyl groups. |
en_US |
dc.description.sponsorship |
Youngstown State University. Department of Chemistry. |
en_US |
dc.language.iso |
en_US |
en_US |
dc.publisher |
[Youngstown, Ohio] : Youngstown State University, 1973. |
en_US |
dc.relation.ispartofseries |
Master's Theses;no. 0052 |
|
dc.subject |
Ring-opening polymerization. |
en_US |
dc.subject |
Chemical kinetics. |
en_US |
dc.subject |
Epoxy compounds. |
en_US |
dc.title |
Kinetics and equilibria of the ring-opening reactions of epoxides with halide ions |
en_US |
dc.type |
Thesis |
en_US |