1122-10-7, A balanced equation for a chemical reaction indicates what is reacting and what is produced, but it reveals nothing about how the reaction actually takes place. The reaction mechanism is the process, or pathway, by which a reaction occurs.1122-10-7, name is 3,4-Dibromo-1H-pyrrole-2,5-dione. An updated downstream synthesis route of 1122-10-7 as follows.
Example 2 Synthesis of 39-(3,4-dibromo-2,5-dioxopyrrolyl)-3,6,9,12,15,18,21,24,27,30,33,36-dodecaoxanonatriacontanoic acid A 100 mL two-necked round bottom flask was flame dried and cooled under nitrogen. The cooled flask was charged with 200 mg (0.296 mmol) of tert-butyl 39-hydroxy-3,6,9,12,15,18,21,24,27,30,33,36-dodecaoxanonatriacontanoate. Triphenylphosphine, 106 mg, was dissolved in about 5 mL anhydrous tetrahydrofuran in a vial, and the solution was added to the 100 mL flask via cannula under nitrogen. The 100 mL flask was cooled in an ice-water bath for 15 minutes. To the cooled solution was added 55 mg (0.217 mmol) 3,4-dibromopyrrole-2,5-dione with stirring until a clear solution was observed. DIAD, 58.3 muL, was added to the cooled reaction mixture, which was stirred in the ice bath for an additional 10 minutes. The reaction mixture was stirred and allowed to reach room temperature over about 20 hours, then concentrated on a rotary evaporator until dry, giving a yellow viscous oil, which was absorbed onto about 1 g silica gel and dry-loaded onto a Reveleris normal phase chromatography unit. The oil was eluted over a 12 g silica gel cartridge with a methanol:dichloromethane gradient from 1:0 to 9:1 over 28 column volumes. The fractions containing the desired product were pooled and concentrated to dryness. The purified product was suspended in 50:50 acetonitrile:water and lyophilized overnight to provide a clear light yellow viscous oil., 1122-10-7
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Reference£º
Patent; Igenica Biotherapeutics, Inc.; Jackson, David Y.; Ha, Edward; Probst, Gary D.; US2014/363454; (2014); A1;,
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