Rose Chuong, K. Luck, R. Luck
Jan 15, 2013
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Influential Citations
5
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Journal
Journal of Organometallic Chemistry
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 ( 1 H/ 13 C/ 31 P{ 1 H}) 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.