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|Section2= |Section7= }} Pyridinium chlorochromate (PCC) is a red–orange salt with the formula C5H5NH(). It is a reagent in organic synthesis used primarily for the oxidation of alcohols to form carbonyls. A variety of related compounds are known with similar reactivity. Although no longer widely used, PCC offered the advantage of the selective oxidation of alcohols to aldehydes, whereas many other reagents were less selective.〔Giovanni Piancatelli, Frederick A. Luzzio, "Pyridinium Chlorochromate" Encyclopedia of Reagents for Organic Synthesis, 2007, John Wiley. 〕 Disadvantages to using PCC are the tedious reaction workup and its toxicity. The chemical was first synthesized and used by E.J. Corey and J. William Suggs. ==Preparation and structure== The original preparation, which was discovered by accident, involves the reaction of pyridine with chromium trioxide and concentrated hydrochloric acid: :C5H5N + HCl + CrO3 → ()() Alternative syntheses have been developed. The compounds consists of the cation pyridinium (()) and the tetrahedral chlorochromate anion (CrO3Cl−). Related salts are also known, such as ()+()−, 1-butylpyridinium chlorochromate. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Pyridinium chlorochromate」の詳細全文を読む スポンサード リンク
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