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Presaturation, solvent PURGE

Key Words Nuclear magnetic resonance spectroscopy, Solvent, Water suppression. Radiation damping. Demagnetization field. Bulk susceptibility effect. Presaturation, Watergate, Purge, Metabonomics. [Pg.34]

Quininone, the most readily available member of the series, was used for the autoxidation studies. The Doering autoxidation procedure,4 that employs only tert-BuOH, was modified to include a THF tert-BuOH (4 1) mixture as the solvent. Likewise, the pressurized Parr bottle setup as described4 was replaced with a simple subsurface gas addition the solvent was presaturated with O2 gas, (compressed air could also be used as the O2 source) followed by t-BuOK addition and continued O2 gas purge. The autoxidations could likewise be conducted in the presence of ethanol or methanol, thereby producing the corresponding ethyl or methyl esters. Formation of these esters could occur via the reactive intermediate bicyclic lactam.4... [Pg.263]

PURGE Presaturation utilizing relaxation gradients and echoes (solvent suppression) 10.5.3... [Pg.376]

See other pages where Presaturation, solvent PURGE is mentioned: [Pg.103]    [Pg.119]    [Pg.335]    [Pg.184]    [Pg.60]    [Pg.103]    [Pg.358]    [Pg.365]   
See also in sourсe #XX -- [ Pg.358 ]



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