Patent ID: 8563765

Claim:
A method of manufacturing a compound of formula [IV]: wherein R 1 is a substituted hydrocarbon group or an unsubstituted hydrocarbon group, R 3 is a substituted hydrocarbon group, a substituted heterocyclic group, an unsubstituted hydrocarbon group, or an unsubstituted heterocyclic group, R 4 is an electron-withdrawing group, and the fluorenyl group is a ring-substituted fluorenyl group or a ring-unsubstituted fluorenyl group, the method comprising reacting a compound of formula [III]: with a compound of formula [V]: wherein R 3 is a substituted hydrocarbon group, a substituted heterocyclic group, an unsubstituted hydrocarbon group, or an unsubstituted heterocyclic group, and R 4 is an electron-withdrawing group.