| http://www.w3.org/ns/prov#value | - The catalysts used herein include alkali metal hydroxides such as sodium hydroxide and lithium hydroxide; alkali metal alcolates such as sodium methylate; tertiary amines such as dimethylbenzylamine, triethylamine, and pyridine; quaternary ammonium salts such as tetramethylammonium chloride and benzyltrimethylammonium chloride; organic phosphorus compounds such as triphenylphosphine and triethylph
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