About: http://webisa.webdatacommons.org/324589350

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	wherein Ar7 is the same as defined above, and X is a halogen atom in the presence of a base and a catalyst comprising a trialkylphosphine or an arylphosphine or both in combination and a palladium compound.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com