About: http://webisa.webdatacommons.org/16623672

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Pyridine or an alkali metal hydroxide such as sodium hydroxide, potassium hydroxide, etc., is used as the catalyst, and methylene chloride, chloroform,
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com