PROCESS FOR PRODUCTION PHENOL DERIVATIVES SUBSTITUTED WITH IODINE AT ORTHO POSITION
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United States of America Patent
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Issued Date -
Aug 26, 2010
app pub date -
Aug 28, 2008
filing date -
Aug 31, 2007
priority date (Note) -
Abandoned
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Abstract
A process in which a phenol derivative is iodinated to produce a 2-iodophenol or 2,6-diiodophenol derivative substituted with iodine at an ortho position thereof is provided, which does not require any step of recovery of iodine but can produce it at low cost, in high yield and with high quality. A phenol derivative is mixed with a pyridine and hydrogen peroxide or iodic acid as an oxidizing agent, and reacted with molecular iodine. As a result, iodination can be performed very efficiently with iodine in an amount close to the theoretical amount relative to the phenol derivative, and the 2-iodophenol or 2,6-diiodophenol derivative can be obtained in high yield and with high quality.
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