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有机锌试剂苯基氯化锌的滴定
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| 制备好的有机锌试剂如何滴定 |
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2楼2017-11-15 22:21:12
3楼2017-11-16 10:46:03
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小木虫: 金币+0.5, 给个红包，谢谢回帖
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碘滴定 Titration Using I2 A 10-mL round-bottom flask equipped with a magnetic stirring bar and a septum was heated with a heat gun under reduced pressure and cooled to r.t. under an argon atmosphere. The dry flask was charged with accurately weighed I2 (254 mg, 1 mmol), fitted with a rubber septum, and flushed with argon. The sat. solution of LiCl in THF (3–5 mL) was added and stirring was started. After the iodine was completely dissolved, the resulting brown solution was cooled to 0 °C in an ice bath and the organometallic reagent was added dropwise via a 1.00-mL syringe (0.01-mL graduations) until the brown color disappeared. The amount consumed contains 1 equiv of the organometallic reagent relative to iodine in the case of monoorganometallic reagents and 0.5 equiv for diorganometallic reagents. 摘自——Krasovskiy, A.; Knochel, P. Synthesis 2006, 890. |
7楼2017-11-21 09:10:39
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nono20094楼
2017-11-16 23:37
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泽梦星海(金币+1): 谢谢参与
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雅虎跌5楼
2017-11-17 10:04
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泽梦星海(金币+1): 谢谢参与
2017-11-17 10:15
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泽梦星海(金币+1): 谢谢参与