dc.contributor.advisor | Fendler, Eleanor J. | |
dc.creator | Sonnier, Leo Joseph | |
dc.date.accessioned | 2022-04-04T13:49:09Z | |
dc.date.available | 2022-04-04T13:49:09Z | |
dc.date.issued | 1979 | |
dc.identifier.uri | https://hdl.handle.net/1969.1/CAPSTONE-DavisS_1995 | |
dc.description | Program year: 1978/1979 | en |
dc.description | Digitized from print original stored in HDR | en |
dc.description.abstract | The spontaneous decarboxylation of 4-nitrobenzisoxazole-3-carboxylic acid (4-NB-3-CA) was studied kinetically in dimethyl sulfoxide (DMSO) in the presence and absence of the naturally occurring bile salt surfactant, sodium cholate (NaC). The observed rate constants exhibited a sigmoidal dependence followed by a plateau over the NaC concentration range of 1.5 x 10⁻³ to 0.2 M. The observed rate constants for the decarboxylation of 4-NB-3-CA in the presence of aggregated sodium cholate in DMSO are enhanced by a factor of ca. 5 x 10⁵-fold as compared to that in pure DMSO solution. The sigmoidal dependence is explicable in terms of solubilization of 4-NB-3-CA by NaC via H-bonding and abstraction of the acidic carboxylic proton of 4-NB-3-CA by the NaC anion. Mechanisms for the NaC catalysis are postulated and discussed, in the light of previous work, in terms of both physical and chemical interactions. | en |
dc.format.extent | 68 pages | en |
dc.format.medium | electronic | en |
dc.format.mimetype | application/pdf | |
dc.subject | 4-nitrobenzisoxazole-3-carboxylic acid | en |
dc.subject | spontaneous decarboxylation | en |
dc.subject | dimethyl sulfoxide | en |
dc.subject | sodium cholate | en |
dc.subject | NaC catalysis | en |
dc.title | Effects Of Sodium Cholate On The Spontaneous Decarboxylation Of 4-Nitrobenzisoxazole-3-Carboxylic Acid | en |
dc.title.alternative | EFFECTS OF SODIUM CHOLATE ON THE SPONTANEOUS DECARBOXYLATION OF 4-NITROBENZISOXAZOLE-3-CARBOXYLIC ACID | en |
dc.type | Thesis | en |
thesis.degree.department | Biology | en |
thesis.degree.grantor | University Undergraduate Fellow | en |
thesis.degree.level | Undergraduate | en |
dc.type.material | text | en |