| http://www.w3.org/ns/prov#value | - Suitable catalysts include benzyltrimethylammonium halides, such as the chloride; tertiary amines, such as benzyldimethylamine, triethylamine, N,N,N',N'-tetramethyl ethylenediamine and the like; N-methylmorpholine; triphenylphosphonium halides, such as the iodide, bromide or chloride; triphenylethylphosphonium diethyl phosphate and other corresponding ionic salts including phosphonates, acetates,
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