Sake Sake , also spelled "saké" ( ), also referred to as a Japanese rice wine, is an alcoholic beverage made by fermenting rice that has been polished to remove the bran. Unlike wine, in which alcohol is produced by fermenting sugar that is naturally present in fruit, typically grapes, sake is produced by a brewing process more akin to that of beer, where starch is converted into sugars which ferment into alcohol. The brewing process for "sake" differs from the process for beer in that, for beer, the conversion from starch to sugar and from sugar to alcohol occurs in
Isopropyl alcohol used as both solvent and hydride source in the Meerwein-Ponndorf-Verley reduction and other transfer hydrogenation reactions. Isopropyl alcohol may be converted to 2-bromopropane using phosphorus tribromide, or dehydrated to propene by heating with sulfuric acid. Like most alcohols, isopropyl alcohol reacts with active metals such as potassium to form alkoxides that can be called "isopropoxides". The reaction with aluminium (initiated by a trace of mercury) is used to prepare the catalyst aluminium isopropoxide. In 1920, Standard Oil first produced isopropyl alcohol by hydrating propene. Its major use at the time was not rubbing alcohol but for oxidation to acetone, whose