- A facile synthesis of 1,4-dialkoxy-2,5-diiodobenzenes: reaction of dialkoxybenzenes with iodine monochloride in alcoholic solvents
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A facile synthesis of 1,4-dialkoxy-2,5-diiodobenzenes via diiodination of the corresponding dialkoxybenzenes with iodine monochloride has been developed. Employment of ah alcoholic solvent as a reaction medium is crucial for attaining a high yield; the reaction in a nonalcoholic solvent usually resulted in a poor yield. The diiodobenzene derivatives are useful intermediates in the synthesis of such advanced materiais as soluble phenylenevinylene polymers anal dialkoxy derivatives of 7,7,8,8-tetracyanoquinodimethane.
- Wariishi, Koji,Morishima, Sin-Ichi,Inagaki, Yoshio
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- Multistep Reversible Redox Systems, LXIII. 2,5-Disubstituted N,N'-Dicyanoquinone Diimines (DCNQIs) - Syntheses, and Redox Properties
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Quinones 1a-q and DCNQIs 2a-g have been synthesized in order to investigate substituent effects.It was necessary to employ novel synthetic routes for the introduction of iodine into 1f (7), the trifluoromethyl group into 1g-i, deuterium into 1m-p, and esp
- Huenig, Siegfried,Bau, Robert,Kemmer, Martina,Meixner, Hubert,Metzenthin, Tobias,et al.
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p. 335 - 348
(2007/10/03)
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- Radiohalogen-Labeled Imaging Agents. 3. Compounds for Measurement of Brain Blood Flow by Emission Tomography
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The radioiodine-labeled amines currently available as brain-imaging agents, based on our previous work and that of others, are prepared either by exchange labeling or by direct iodination of a protected intermediate.The intrinsic slowness of these process
- Sargent, Thornton,Shulgin, Alexander T.,Mathis, Chester A.
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p. 1071 - 1077
(2007/10/02)
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