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<http://webisa.webdatacommons.org/prov/131518569>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/222838063> .
<http://webisa.webdatacommons.org/222838063>	<http://www.w3.org/ns/prov#value>	"R1-R3 are as hereinbefore defined and A is a leaving group, is reacted with an optionally substituted compound of general formula (III): wherein" .
<http://webisa.webdatacommons.org/222838063>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .