These common heterocyclic compound, 10485-09-3, name is 2-Bromoindene, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route. HPLC of Formula: C9H7Br
3.7 ml (30 mmol) of 2-Bromo-1H-indene was added to a flask, and Ar bubbling was performed for about 5 minutes while stirring in the presence of 100 ml of THF to remove dissolved gas. Under Ar bubbling, 0.8 g (1.5 mmol) of Ni(dppe)Cl2 was rapidly added and 30 ml (30 mmol) of 1.0 M ((Trimethylsilyl)methyl)magnesium chloride dissolved in diethyl ether at room temperature was slowly added dropwise. And then, the reaction was continued overnight while refluxing under Ar condition at 80 C. (dppe=1,2-Bis(diphenylphosphino)ethane) 50 mL of water was added thereto, and the organic layer was extracted three times with 50 mL of diethylether. An appropriate amount of MgSO4 was added to the collected organic layer, stirred for a while, filtered, and the solvent was dried under reduced pressure. The resulting product was confirmed by 1H-NMR (500 MHz, CDCl3): 0.03 (9H, s), 3.25 (2H, s), 6.3 (1H, s), 7.02-7.32 (4H, m)
The synthetic route of 2-Bromoindene has been constantly updated, and we look forward to future research findings.
Reference:
Patent; LG CHEM, LTD.; CHO, Kyung Jin; LEE, Ki Soo; LEE, Sung Min; HONG, Bog Ki; CHO, Min Seok; KIM, Se Young; HAN, Chang Woan; (27 pag.)US2018/79841; (2018); A1;,
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bromide – Wiktionary