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愛因沒有斯坦新蟲 (小有名氣)
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[求助]
有專業(yè)英語比較棒的嗎，幫看看，翻譯一下實(shí)驗(yàn)步驟，謝謝……
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5-(4-Iodophenyl)-l,9-dimethyldipyrromethane ua). This condensation follows nearly the same conditions employed for forming meso-porphyrins (29). In a 1 L one-neck round bottom flask with a stir bar was placed 2-methylpyrrole (35) (648 mg, 8 mmol), 44odobenzaldehyde (928 mg, 4 mmol), and 800 mL CH2C12. The clear solution was purged with Ar for 30 min. Trifluoroacetic acid (62 pL, 0.8 mmol, 10-3 M) was added to initiate the condensation. After 1.5 h TLC (silica, CH2C12) showed that all of the aldehyde had been consumed. The light yellow reaction mixture was then washed with 100 mL of 0.1 N NaOH, 200 mL of H20, dried (NqSOq), filtered, and rotary evaporated to a viscous green oil. The oil was quickly placed on a vacuum line to remove residual solvent and prevent decomposition. A light green solid (1.44 g) was immediately obtained (95% yield). *H NMR (CDC13) 6 2.20 (s, 6 H, CH3), 5.28 (s, 1 H, CH), 5.76 (d, 4 H, p-pyrrole), 7.00 (AA'BB', 2 H, ArH), 7.60 (AABB', 2 H, ArH). 發(fā)自小木蟲Android客戶端 |
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