About: http://webisa.webdatacommons.org/268222788

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	It has been discovered that a halogen, particularly fluorine, on the ring of an aromatic leaving group such as benzenesulfonyl provides a superior leaving group and increases the propensity for nucleophilic substitution.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com