Saturday, July 10, 2004

Chemical Compound, Preparation

Thioketones are usually prepared through reaction of ketones with phosphorus sulfur reagents such as Lawesson's reagent, Ar2P2S4 (Figure 50). Xanthates (Greek xanthos, �yellow,� from the colour of their copper salts), thiocarbonyl derivatives of carbonates, ROC(=S)OR, are prepared from alcohols and carbon disulfide. This reaction is used to produce a soluble form of cellulose


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