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Reference.org
Collins reagent
open-in-new
<p>Collins reagent is the complex of <a href="/facts/Chromium_trioxide/ENafKcAm">chromium(VI) oxide</a> with <a href="/facts/Pyridine/X817hCch">pyridine</a> in <a href="/facts/Dichloromethane/mHyeTD2D">dichloromethane</a>. This <a href="/facts/Metal-pyridine_complex/9JRXgEz4">metal-pyridine complex</a>, a red solid, is used to <a href="/facts/Alcohol_oxidation/FV12dlnW">oxidize primary alcohols</a> to the corresponding <a href="/facts/Aldehydes/xSIRkW03">aldehydes</a> and <a href="/facts/Secondary_alcohols/Y0SCTDkh">secondary alcohols</a> to the corresponding <a href="/facts/Ketones/BqQXpLo4">ketones</a>. This complex is a <a href="/facts/Hygroscopic/1NBGewXv">hygroscopic</a> orange solid. </p>