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2,3-Dichloro-5,6-dicyano-1,4-benzoquinone (or DDQ) is the chemical reagent with formula C 6 Cl 2 (CN) 2 O 2. This oxidant is useful for the dehydrogenation of alcohols, [3] phenols, [4] and steroid ketones. [5] DDQ decomposes in water, but is stable in aqueous mineral acid. [6]
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p-Methoxybenzyl (PMB) is used as a protecting group for alcohols in organic synthesis (4-Methoxybenzylthiol is used to protect thiols). The p -methoxybenzyl group Strong base such as powdered potassium hydroxide or sodium hydride and p -methoxybenzyl halide (chloride or bromide) [ 14 ] [ 15 ]
Created Date: 8/30/2012 4:52:52 PM
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It is recommended to name the SVG file “Norrish Type II Mechanism-nitrobenzyl deprotection.svg”—then the template Vector version available (or Vva) does not need the new image name parameter. This chemical image was uploaded in the JPEG format even though it consists of non-photographic data .
The use of protective groups is pervasive but not without criticism. [103] In practical terms their use adds two steps (protection-deprotection sequence) to a synthesis, either or both of which can dramatically lower chemical yield. Crucially, added complexity impedes the use of synthetic total synthesis in drug discovery.
The following other wikis use this file: Usage on ar.wikipedia.org ثنائي كلورو ثنائي سيانو بنزوكينون; Usage on cs.wikipedia.org 2,3-dichlor-5,6-dikyano-1,4-benzochinon; Usage on de.wikipedia.org 2,3-Dichloro-5,6-dicyano-1,4-benzochinon; Usage on hu.wikipedia.org 5,6-Diciano-2,3-diklór-1,4-benzokinon; Usage on ja ...