About: http://webisa.webdatacommons.org/430855690

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	A solution of compound 18 is first prepared under an inert atmosphere (argon or nitrogen) and then a strong base such as n-butyl lithium is added (in about a 10% molar excess).
http://www.w3.org/ns/prov#wasQuotedFrom	google.com