This study has resulted in a phosphine funetionalized crown ether. synrdiQ-methoxy-5-diphenylphosphino-1.3-cplyl l-24-crown-6, obtained tkmt a live step synthesis. 4-13romophenol was treated in turn with formaldehyde. di methyl sulfate, and phosphorous trihromide. producing 4-bromo-2.6-his(bromomethyl )anisole. The key intermediate. spm-di(2-methoz}-5-bromo-I.3-z( I).l )-24-crown-6. was obtained from treating 4-hromo-3.6-bis(bromomethyl )anisole with diethylenc glycol and potassium thutoyide. The potassium ion apparently provided a template to assist the formation of the product. SLm-di(2-methosp-5-diphenylphosphino- I.3-x lyl )-24-crown-6 was obtained from treating sm-di(2-methos5-5-hromo-I.3-x'kI -24-crown-6 in sequence with n-BuLi and methyldiphern I phosphinite. The nP NMR of the phosphine crown ether showed a single signal at 6 -5.35 ppm. consistent with the formation of a single product.The'1I NMR of the phosphine crown ether in chloroform-d showed signals at6354-3.56 (crown CIF). 3.61 I OCI I;I. 4.44 (benzylic Cl I.6 and 7.25-7.29 (aromatic Ii) ppm.The integrated areas were consistent with the formula. The `C NNIR of the phosphine crown ether in chloroform-d displaced signals at 6 63.1, 68.5. 70.0. 70.1. 128.5 and 128.6 (d). 128.7. 131.8 and 131.9 (d), 132.0. 133.6 and 133.7 (d). 136.1 and 136.4 (d). 137.4 and 137.5 (dl, and 158.4 ppm. The "C signals were consistent with the formula and structure. The br)minated crown ether was characterized with 'I I and ''C NMR. as well as X-ray crystallography and elemental analysis. / Department of Chemistry

Thesis (M.S.)--University of Texas at Dallas, 2008. / Includes vita. Includes bibliographical references (leaves 85-88)

Thesis (Ph. D.)--Virginia Polytechnic Institute and State University, 1992. / Vita. Abstract. Includes bibliographical references (leaves 274-277). Also available via the Internet.

Thesis (Ph. D.)--Virginia Polytechnic Institute and State University, 1991. / Vita. Abstract. Includes bibliographical references. Also available via the Internet.

Thesis (Ph. D.)--New York University, 1934. / Part I has title: The rearrangement of alkenyl aryl ethers and the synthesis of isopropenyl phenols and their reduction products. Reprinted from the Journal of the American chemical society, v. 55, 1933. cf. Introd. Bibliography: p. 17-18, 26.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1960. / Typescript. Vita. With this is bound (as appendices) two articles reprinted from Analytical chemistry: Hydroxylammonium acetate as carbonyl reagent / Takeru Higuchi and C.H. Barnstein, vol. 28 (June 1956), p. 1022-1025 ; Photometric determination of indicator end points / Takeru Higuchi, Carl Rehm, and Charles Barnstein, vol. 28 (Oct. 1956), p. 1506-1510. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 72-73).

Thesis (PH.D.)--New York University, 1934. / Part I has title: The rearrangement of alkenyl aryl ethers and the synthesis of isopropenyl phenols and their reduction products. Reprinted from the Journal of the American chemical society, v. 55, 1933. cf. Introd. Bibliography: p. 17-18, 26.

Thesis (M.Sc.)--College of William and Mary. / Vita. Includes bibliographical references. Also available online.

Thesis (Ph. D.)--Columbia University, 1925. / Vita. Bibliography: p. [39]-40, [61].

Thesis (Ph. D.)--University of Chicago, 1939. / Lithoprinted. "Private edition, distributed by the University of Chicago libraries, Chicago, Illinois."