<http://webisa.webdatacommons.org/204516445>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/49424464>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/204516445> .
<http://webisa.webdatacommons.org/204516445>	<http://www.w3.org/ns/prov#value>	"The reaction of the compound of formula (Ia) and R.sub.1--X may be performed in the presence of a base, such as sodium hydride or potassiumtert-butoxide." .
<http://webisa.webdatacommons.org/204516445>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<patentgenius.com> .