Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 1073-39-8, name is 3-Bromobicyclo[4.2.0]octa-1,3,5-triene, This compound has unique chemical properties. The synthetic route is as follows., COA of Formula: C8H7Br
A) Synthesis of N,N?-diphenyl-N,N?-dibenzocyclobutane-1,4-phenylenediamine (3) (0157) To a 500 ml, 3-neck round bottom flask equipped with a mechanical stirrer, nitrogen inlet, and reflux condenser (with nitrogen outlet), palladium (II) acetate (173 mg, 0.80 mmol) and tri(o-tolyl)phosphine (486 mg, 1.60 mmol) are added to 50 ml toluene. The mixture is stirred at room temperature under nitrogen until the palladium catalyst dissolves and the solution turns yellow. N,N?-diphenyl-1,4-phenylenediamine (10.0 g, 38.4 mmol), bromobenzocyclobutane (15.5 g, 76.8 mmol) and 200 ml toluene are added, followed by sodium t-butoxide (7.37 g, 76.8 mmol). Upon addition of the sodium t-butoxide the reaction turns black. The reaction is heated to reflux under nitrogen for 22 hours. The reaction is quenched by addition of 30 ml of 1 M aqueous HCl. The toluene solution is passed through basic alumina and the crude product is purified by recrystallization from a toluene/hexanes/methanol mixture. (0158) Yield=9.43 g (53 percent). 1H NMR (THF-d8) delta: 7.15 (t, 4H, Ar), 6.80-7.01 (m, 16H, Ar) 3.09 (s, 8H, -CH2CH2-) 13C-NMR (THF-d8) delta: 149.72, 148.26, 147.34, 144.18, 141.50, 129.92, 125.82, 125.76, 124.35, 123.61, 122.45, 121.06, 29.78.
According to the analysis of related databases, 1073-39-8, the application of this compound in the production field has become more and more popular.
Reference:
Patent; SUMITOMO CHEMICAL COMPANY, LIMITED; Gaynor, Scott; Inbasekaran, Michael; O’Brien, James J.; Welsh, Dean M.; (20 pag.)US9399702; (2016); B2;,
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