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. 628-21-7, name is 1,4-Diiodobutane, This compound has unique chemical properties. The synthetic route is as follows., Recommanded Product: 1,4-Diiodobutane
Stage 1 (0250) An oven-dried 3 L 4-neck flask fitted with an internal thermometer, N2 bubbler, overhead stirrer and oven-dried pressure-equalising dropping funnel was charged with 1,4-dibromo-2,5-dimethylbenzene (70 g, 265 mmol) and dry THF (700 mL). The solution was cooled with stirring to <-70 C. to produce a white slurry. s-Butyllithium (370 mL, 1.4 M, 518 mmol) was charged to the dropping funnel and added dropwise over the space of 2 h ensuring the reaction temperature did not exceed -70 C. The slurry was stirred for 2 h after which GCMS confirmed the lithiation was complete. The dropping funnel was charged with a solution of 1,4-diiodobutane (15.7 mL, 119 mmol) in dry THF (160 mL) which was then added dropwise over 0.75 h. The resulting pale yellow slurry was allowed to warm to room temperature and stirred for 12 h. The reaction was quenched by addition of water. The mixture was transferred to a separating funnel and the layers were separated. The aqueous layer was extracted with diethyl ether and the combined organics were washed with water, dried with MgSO4, filtered and concentrated to yield an off-white solid. The product was triturated with 300 mL methanol for 2 h and recrystallised from toluene/IPA to yield a white powder that was dried in the oven (31.86 g, 63%). GCMS indicated a purity of 96% and the material was taken to the next stage without further purification Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand reaction routes of 628-21-7.