Degree Type

Dissertation

Date of Award

1983

Degree Name

Doctor of Philosophy

Department

Chemistry

Abstract

Crystal structure determinations are reported for 3,9-dimethoxy-2,4,8,10-tetraoxa-3,9-diphosphaspiro5.5undecane and 2-oxo-2-(bis-((beta)-chlorethyl)amino)-4,6-dimethyl-1,3,2-oxazaphosphorinane. Evidence is presented for transannular bond formation upon protonation of OP(OCH(,2)CH(,2))(,3)N and SP(OCH(,2)CH(,2))(,3)N. It is also shown that the phosphoryl oxygen or sulfur is diprotonated at high acid to substrate ratios. The ('17)O NMR data for a series of phosphites and phosphates are correlated with alkyl substitution and ring conformation. A series of unsuccessful attempts to synthesize compounds of the type X(OCH(,2)CH(,2))(,3)P (X = B, Si, P) are reported. Protonation of P(OCH(,2)CH(,2))(,3)N by trialkyloxonium tetrafluoborate and methyl triflate is investigated to determine the source of the proton.

DOI

https://doi.org/10.31274/rtd-180813-11183

Publisher

Digital Repository @ Iowa State University, http://lib.dr.iastate.edu/

Copyright Owner

Leslie Earl Carpenter, II

Language

en

Proquest ID

AAI8407056

File Format

application/pdf

File Size

176 pages

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