Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 18869-30-2, name is (E)-1,2-Bis(4-bromophenyl)ethene, A new synthetic method of this compound is introduced below., Product Details of 18869-30-2
Step 3: Synthesis of (E)-4,4′-bis[4-(10-phenyl-9-anthryl)phenyl]stilbene; 2.0 g (5.9 mmol) of (E)-4,4′-dibromostilbene, 4.9 g (13 mmol) of 4-(10-phenyl-9-anthryl)phenylboronic acid, 0.053 g (0.24 mmol) of palladium (II) acetate, and 0.25 g (0.83 mmol) of tri(ortho-tolyl)phosphine were put into a 100 mL three-necked flask. Then, the atmosphere in the flask was substituted with nitrogen. 30 mL of ethylene glycol dimethyl ether (abbreviation: DME) and 18 mL (35 mmol) of an aqueous potassium carbonate solution (2.0 mol/L) were added to the mixture and the mixture was refluxed at 90 C. for 6 hours to be reacted. After the reaction was completed, a precipitate in the reaction mixture was collected by suction filtration. The collected precipitate was washed with toluene; then 4.7 g of objective (E)-4,4′-bis[4-(10-phenyl-9-anthryl)phenyl]stilbene (abbreviation: PAP2S) was obtained as a light yellow powdered solid in a yield of 94%. A synthetic scheme of (E)-4,4′-bis[4-(10-phenyl-9-anthryl)phenyl]stilbene is illustrated below (synthetic scheme c-1). A 1H NMR data of the obtained (E)-4,4′-bis[4-(10-phenyl-9-anthryl)phenyl]stilbene is described below. 1H NMR (CDCl3, 300 MHz): delta=7.14-7.21 (m, 2H), 7.30-7.44 (m, 11H), 7.48-7.52 (m, 5H), 7.54-7.61 (m, 8H), 7.63-7.73 (m, 8H), 7.77-7.81 (m, 6H), 7.83-7.91 (m, 4H).The 1H NMR chart is illustrated in each of FIGS. 8A and 8B. It is to be noted that the range of 7.0 to 8.0 ppm in FIG. 8A is expanded and illustrated in FIG. 8B.
The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.
Reference:
Patent; Semiconductor Energy Laboratory Co., Ltd.; US2008/81934; (2008); A1;,
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