| abstract |
The present invention relates to the technical field of catalysts, which provides a method for preparing a compound combined with a fluorene group and a carboxylate, the method comprising reacting 9H-fluorene with a compound of chemical structural formula II to obtain a compound of chemical structural formula I; Wherein R 1 and R 2 are each independently selected from hydrogen or C1-C4 alkyl; R 3 is selected from C1-C4 alkyl; X is selected from chlorine, bromine or iodine. |