Sterically encumbered functional groups: an investigation of endo versus exo phosphoryl complexation using proton and phosphorus-31 NMR

BP Friedrichsen, DR Powell…

Index: Friedrichsen, Bernard P.; Powell, Douglas R.; Whitlock, Howard W. Journal of the American Chemical Society, 1990 , vol. 112, # 24 p. 8931 - 8941

Full Text: HTML

Citation Number: 70

Abstract

Abstract: The synthesis of phosphine oxide bifunctional macrocycles 1-4 is reported. Additionally, the X-ray crystal structures for exo-exo diyne 1 and endo-exo hosts 2 and 4 are presented. Assignment of the two phosphorus signals in the NMR spectra of 2 and 4 and the aromatic proton signals in the'H NMR spectra of 2 and 4 is reported. The complexation behavior of macrocycles 1-4 and precyclophane 8 with a variety of neutral organic guests ...

Related Articles:

Synthesis and solid-state structure of substituted arylphosphine oxides

[Whitaker, Craig M.; Kott, Kevin L.; McMahon, Robert J. Journal of Organic Chemistry, 1995 , vol. 60, # 11 p. 3499 - 3508]

Stoichiometric and catalytic oxygen activation by trimesityliridium (III)

[Jacobi, Bridey Grant; Laitar, David S.; Pu, Lihung; Wargocki, Michael F.; DiPasquale, Antonio G.; Fortner, Kevin C.; Schuck, Stephany M.; Brown, Seth N. Inorganic Chemistry, 2002 , vol. 41, # 18 p. 4815 - 4823]

Zum Mechanismus der Wittig??Reaktion mit Triaryl??alkoxycarbonylmethylen??phosphoranen

[Ruechardt,C. et al. Chemische Berichte, 1967 , vol. 100, p. 1144 - 1164]

Zum Mechanismus der Wittig??Reaktion mit Triaryl??alkoxycarbonylmethylen??phosphoranen

[Ruechardt,C. et al. Chemische Berichte, 1967 , vol. 100, p. 1144 - 1164]

Reaction of triarylphosphines with tetramethyl-1, 2-dioxetane: kinetics of formation and decomposition of 2, 2-dihydro-4, 4, 5, 5-tetramethyl-2, 2, 2-triaryl-1, 3, 2- …

[Baumstark, Alfons L.; McCloskey, Candice J.; Williams, Timothy E.; Chrisope, Douglas R. Journal of Organic Chemistry, 1980 , vol. 45, # 18 p. 3593 - 3597]

More Articles...