Ditopic ligands featuring [P,S], [P,P] or [P,B] chelating pockets housed on a protected o-hydroquinone core
Document Type
Article
Publication Date
1-15-2013
Abstract
1,2-Dibromo-4,5-dimethoxybenzene was explored as a platform for the buildup of ditopic ligands. Low temperature reactions with n-butyllithium followed by quenches with various electrophiles led to the syntheses (2-bromo-4,5- dimethoxyphenyl)diphenylphosphine (1), (4,5-dimethoxy-2-(methylthio)phenyl) diphenylphosphine (2), 1,2-bis(diphenylphosphino)-4,5-dimethoxybenzene (3), and (2-(dicyclohexylboryl)-4,5-dimethoxyphenyl)diphenylphosphine (4). Oxidation of 3 produced 1,2-bis(diphenylphosphoryl)-4,5-dimethoxybenzene (5). All compounds were characterized by multinuclear (1H/13C/ 31P{1H}) NMR spectroscopy and by high resolution mass spectrometry. In addition, single crystal X-ray diffraction characterizations of 1, 3, 4, and 5 were also carried out. Reactivity of o-phosphinophenylborane 4 toward molecular hydrogen was also probed. © 2012 Elsevier B.V. All rights reserved.
Publication Title
Journal of Organometallic Chemistry
Recommended Citation
Chuong, R.,
Luck, K.,
Luck, R.,
Nguyen, L.,
Phan, D.,
Pignotti, L.,
Urnezius, E.,
&
Valente, E.
(2013).
Ditopic ligands featuring [P,S], [P,P] or [P,B] chelating pockets housed on a protected o-hydroquinone core.
Journal of Organometallic Chemistry,
724, 45-50.
http://doi.org/10.1016/j.jorganchem.2012.10.032
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/6792